Commit Graph

263 Commits

Author SHA1 Message Date
Marco Stornelli 56d611a04f char drivers: RAM oops/panic logger
Ramoops, like mtdoops, can log oops/panic information but in RAM.  It can
be used with persistent RAM for systems without flash support.  In
addition, for this systems, with this driver, it's no more needed add to
the kernel the mtd subsystem with advantage in footprint.

It can be used in a very easy way with persistent RAM for systems without
flash support.  For these systems, with this driver, it is no longer
required to cinlude mtd subsystem with an advantage in footprint.  In
addition, you can save flash space and store this information only in RAM.

Signed-off-by: Marco Stornelli <marco.stornelli@gmail.com>
Cc: Simon Kagstrom <simon.kagstrom@netinsight.net>
Cc: David Woodhouse <David.Woodhouse@intel.com>
Cc; Anders Grafstrom <anders.grafstrom@netinsight.net>
Cc: Yuasa Yoichi <yuasa@linux-mips.org>
Cc: Jamie Lokier <jamie@shareable.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-27 09:12:50 -07:00
Randy Dunlap 972c196266 tty: n_gsm: depends on NET
n_gsm uses skb functions, so it should depend on NET.

n_gsm.c:(.text+0x123d49): undefined reference to `skb_dequeue'
n_gsm.c:(.text+0x123d98): undefined reference to `kfree_skb'
n_gsm.c:(.text+0x123e1e): undefined reference to `skb_pull'

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-05-21 09:34:29 -07:00
Alan Cox e1eaea46bb tty: n_gsm line discipline
Add an implementation of GSM 0710 MUX. The implementation currently supports

- Basic and advanced framing (as either end of the link)
- UI or UIH data frames
- Adaption layer 1-4 (1 and 2 via tty, 3 and 4 as skbuff lists)
- Modem and control messages including the correct retry process
- Flow control

and exposes the MUX channels as a set of virtual tty devices including modem
signals. This is an experimental driver.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-05-21 09:34:29 -07:00
Amit Shah fb08bd274d virtio: console: Associate each port with a char device
The char device will be used as an interface by applications on the
guest to communicate with apps on the host.

The devices created are placed in /dev/vportNpn where N is the
virtio-console device number and n is the port number for that device.

One dynamic major device number is allocated for each device and minor
numbers are allocated for the ports contained within that device.

The file operation for the char devs will be added in the following
commits.

Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2010-02-24 14:22:53 +10:30
Kamalesh Babulal aa8b83cb0b powerpc/hvc: Driver build breaks with !HVC_CONSOLE
Hi Stephen,

	next-20090925 randconfig build breaks on hvcs driver on powerpc,
with HVC_CONSOLE=n.

ERROR: ".hvc_put_chars" [drivers/char/hvcs.ko] undefined!
ERROR: ".hvc_get_chars" [drivers/char/hvcs.ko] undefined!

adding the dependency of HVC_CONSOLE helped

Signed-off-by: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-01-15 13:26:13 +11:00
Mike Frysinger f69b2d7e97 bfin-otp: add BF51x to the supported arch list
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15 00:15:35 -05:00
Alan Cox f53a2ade0b tty: esp: remove broken driver
The ESP driver has been marked broken for years. It's an old ISA device
that clearly nobody cares about any more. Remove it

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-12-11 15:18:03 -08:00
Alan Cox 412145947a tty: Mark generic_serial users as BROKEN
There isn't much else I can do with these. I can find no hardware for any
of them and no users. The code is broken.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-10-30 14:43:12 -07:00
Dimitri Sivanich fbd8ae1068 drivers/char/uv_mmtimer.c: add memory mapped RTC driver for UV
This driver memory maps the UV Hub RTC.

Signed-off-by: Dimitri Sivanich <sivanich@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-24 07:21:03 -07:00
Yoichi Yuasa 27fdd325da MIPS: Update VR41xx GPIO driver to use gpiolib
Signed-off-by: Yoichi Yuasa <yyuasa@linux.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-07-03 15:45:25 +01:00
Mike Frysinger 7bfa58dd4a drivers/char/rtc: disable legacy RTC driver on Blackfin systems
Blackfin platforms do not support the hardware which this driver drives.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: David Brownell <david-b@pacbell.net>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-18 13:03:43 -07:00
Linus Torvalds 489f7ab6c1 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (31 commits)
  trivial: remove the trivial patch monkey's name from SubmittingPatches
  trivial: Fix a typo in comment of addrconf_dad_start()
  trivial: usb: fix missing space typo in doc
  trivial: pci hotplug: adding __init/__exit macros to sgi_hotplug
  trivial: Remove the hyphen from git commands
  trivial: fix ETIMEOUT -> ETIMEDOUT typos
  trivial: Kconfig: .ko is normally not included in module names
  trivial: SubmittingPatches: fix typo
  trivial: Documentation/dell_rbu.txt: fix typos
  trivial: Fix Pavel's address in MAINTAINERS
  trivial: ftrace:fix description of trace directory
  trivial: unnecessary (void*) cast removal in sound/oss/msnd.c
  trivial: input/misc: Fix typo in Kconfig
  trivial: fix grammo in bus_for_each_dev() kerneldoc
  trivial: rbtree.txt: fix rb_entry() parameters in sample code
  trivial: spelling fix in ppc code comments
  trivial: fix typo in bio_alloc kernel doc
  trivial: Documentation/rbtree.txt: cleanup kerneldoc of rbtree.txt
  trivial: Miscellaneous documentation typo fixes
  trivial: fix typo milisecond/millisecond for documentation and source comments.
  ...
2009-06-14 13:46:25 -07:00
Linus Torvalds 02a99ed620 Merge branch 'for-linus' of git://git.monstr.eu/linux-2.6-microblaze
* 'for-linus' of git://git.monstr.eu/linux-2.6-microblaze: (55 commits)
  microblaze: Don't use access_ok for unaligned
  microblaze: remove unused flat_stack_align() definition
  microblaze: Fix problem with early_printk in startup
  microblaze_mmu_v2: Makefiles
  microblaze_mmu_v2: Kconfig update
  microblaze_mmu_v2: stat.h MMU update
  microblaze_mmu_v2: Elf update
  microblaze_mmu_v2: Update dma.h for MMU
  microblaze_mmu_v2: Update cacheflush.h
  microblaze_mmu_v2: Update signal returning address
  microblaze_mmu_v2: Traps MMU update
  microblaze_mmu_v2: Enable fork syscall for MMU and add fork as vfork for noMMU
  microblaze_mmu_v2: Update linker script for MMU
  microblaze_mmu_v2: Add MMU related exceptions handling
  microblaze_mmu_v2: uaccess MMU update
  microblaze_mmu_v2: Update exception handling - MMU exception
  microblaze_mmu_v2: entry.S, entry.h
  microblaze_mmu_v2: Add CURRENT_TASK for entry.S
  microblaze_mmu_v2: MMU asm offset update
  microblaze_mmu_v2: Update tlb.h and tlbflush.h
  ...
2009-06-12 13:15:17 -07:00
Pavel Machek 4737f0978d trivial: Kconfig: .ko is normally not included in module names
.ko is normally not included in Kconfig help, make it consistent.

Signed-off-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2009-06-12 18:01:50 +02:00
Mike Frysinger 0b91421857 tty: bfin_jtag_comm: emulate a TTY over the Blackfin EMUDAT/JTAG interface
The Blackfin JTAG interface has a 4 byte generic data field (EMUDAT).  With
a little creative thinking, we can turn this into a TTY device.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-11 08:51:06 -07:00
Michal Simek 6fa612b56c microblaze: Kconfig: Enable drivers for Microblaze
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-05-21 15:56:04 +02:00
Uwe Kleine-König 807a96cd0e NVRAM depends on RTC_DRV_CMOS
drivers/char/nvram.c uses rtc_lock, that (on ARM) is only defined if
RTC_DRV_CMOS is enabled.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
2009-01-31 01:21:59 +01:00
Kamalesh Babulal d2b4397bf8 powerpc: Fix iseries drivers build failure without CONFIG_VIOPATH
iSeries dependent drivers fail to build, when CONFIG_VIOPATH is disabled.

Fix the problem by making those drivers select it.

Signed-off-by: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-01-08 16:25:14 +11:00
Mike Frysinger 103d6d9170 genrtc: disable genrtc on Blackfin systems
Blackfin platforms do not support the hardware which this driver drives.

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Acked-by: Alessandro Zummo <a.zummo@towertech.it>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-06 15:59:23 -08:00
Alan Cox 0fdeceb88d tty: ESP has been broken for locking etc forver
Mark it broken

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-02 10:19:39 -08:00
Sukadev Bhattiprolu e4adca27bc Add DEVPTS_MULTIPLE_INSTANCES config token
Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-02 10:19:35 -08:00
Linus Torvalds 3c92ec8ae9 Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (144 commits)
  powerpc/44x: Support 16K/64K base page sizes on 44x
  powerpc: Force memory size to be a multiple of PAGE_SIZE
  powerpc/32: Wire up the trampoline code for kdump
  powerpc/32: Add the ability for a classic ppc kernel to be loaded at 32M
  powerpc/32: Allow __ioremap on RAM addresses for kdump kernel
  powerpc/32: Setup OF properties for kdump
  powerpc/32/kdump: Implement crash_setup_regs() using ppc_save_regs()
  powerpc: Prepare xmon_save_regs for use with kdump
  powerpc: Remove default kexec/crash_kernel ops assignments
  powerpc: Make default kexec/crash_kernel ops implicit
  powerpc: Setup OF properties for ppc32 kexec
  powerpc/pseries: Fix cpu hotplug
  powerpc: Fix KVM build on ppc440
  powerpc/cell: add QPACE as a separate Cell platform
  powerpc/cell: fix build breakage with CONFIG_SPUFS disabled
  powerpc/mpc5200: fix error paths in PSC UART probe function
  powerpc/mpc5200: add rts/cts handling in PSC UART driver
  powerpc/mpc5200: Make PSC UART driver update serial errors counters
  powerpc/mpc5200: Remove obsolete code from mpc5200 MDIO driver
  powerpc/mpc5200: Add MDMA/UDMA support to MPC5200 ATA driver
  ...

Fix trivial conflict in drivers/char/Makefile as per Paul's directions
2008-12-28 16:54:33 -08:00
Hendrik Brueckner 44a01d5ba8 [S390] s390/hvc_console: z/VM IUCV hypervisor console support
This patch introduces a new hypervisor console (HVC) back-end that provides
terminal access over the z/VM inter-user communication vehicle (IUCV).

The z/VM IUCV communication is independent of the regular tcp/ip network
and allows access even if there is no network connection between two
z/VM guest virtual machines.
The z/VM IUCV hypervisor console back-end helps the user to access a
z/VM guest virtual machine that lacks of network connectivity; and thus,
provides a "full-screen" terminal alternative to 3215/3270 terminal sessions.

Use the hvc_iucv=[0..8] kernel boot parameter to specify the number of
HVC terminals using a z/VM IUCV back-end.

A recent version of the s390-tools package is required to establish a
terminal connection to a z/VM IUCV hypervisor console back-end.

Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25 13:39:03 +01:00
Paul Mackerras cea555d384 Merge branch 'linux-2.6' into next 2008-11-19 16:10:32 +11:00
David Gibson d5e5491343 powerpc: udbg-based backend for hvc_console
This adds a new backend for the hvc console based on the low-level
udbg callbacks.  This effectively implements a working runtime console
in terms of the simple udbg primitives.  This is kind of a hack -
since udbg isn't something you really want to be using routinely - but
it's really useful during bringup.

This can be used to quickly implement a userspace-usable console while
you're working on a proper driver for whatever console I/O device the
hardware has.  Or, it can be used to avoid writing a full blown
tty/console driver entirely for quick-and-dirty I/O hardware that will
later be replaced by something else.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-11-19 16:04:25 +11:00
Randy Dunlap 31c00fc15e Create/use more directory structure in the Documentation/ tree.
Create Documentation/blockdev/ sub-directory and populate it.
Populate the Documentation/serial/ sub-directory.
Move MSI-HOWTO.txt to Documentation/PCI/.
Move ioctl-number.txt to Documentation/ioctl/.
Update all relevant 00-INDEX files.
Update all relevant Kconfig files and source files.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
2008-11-14 17:28:53 +00:00
Ralf Baechle 09d9327b34 CHAR: Delete old and now unused M48T35 RTC driver for SGI IP27.
It was only used by this one SGI platform which recently was converted to
RTC_LIB and with RTC_LIB enabled the legacy drivers are no more selectable.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-10-30 14:44:35 +00:00
Ralf Baechle 4bdebe5b4a CHAR: Delete old and now unused DS1286 driver.
It was only used by two SGI platforms which recently were converted to
RTC_LIB and with RTC_LIB enabled the legacy drivers are no more selectable.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
2008-10-30 14:44:35 +00:00
David Brownell 0f4d3fd8ac legacy rtc: remove needless/confusing HPET_RTC_IRQ option
HPET_RTC_IRQ is no longer needed; HPET_EMULATE_RTC suffices and is more
correct.  (http://bugzilla.kernel.org/show_bug.cgi?id=11111)

Note that when using the legacy RTC driver, platforms don't really do a
dynamic switch between HPET and non-HPET modes based on whether HPET
hardware actually exists ...  only rtc-cmos (using the new RTC framework)
currently switches that way.

So this reflects bitrot in that legacy code, for x86/ia64: kernels with
HPET support configured (e.g.  for a clocksource) can't get IRQs from the
legacy RTC driver unless they really have HPET hardware.  (The obvious
workaround is to not use the legacy RTC driver on those platforms when you
configure HPET ...  unless you know the target really has a HPET.)

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-16 11:21:39 -07:00
Alan Cox d18a750fe9 stallion: Use krefs
Use tty_port_init and krefs in the stallion drivers to protect us from devices
going away underneath us. As with the other drives some rearranging is done to
pass the tty structure down properly on the user side.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-13 09:51:41 -07:00
Stephen Rothwell 4c514a5ad1 powerpc/iseries: remove the old viocons driver
This driver was declared obsolete over 2 years ago, the alternative
console driver for legacy iSeries (hvc_iseries) was made the default
over 1 year ago and this driver has been build broken for over 3
months, so remove it.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-08-07 18:07:10 -07:00
Linus Torvalds ff5d48a6d1 Merge git://git.infradead.org/embedded-2.6
* git://git.infradead.org/embedded-2.6:
  Make console charset translation optional
2008-07-25 12:02:08 -07:00
Christian Borntraeger 7721c494a2 virtio: console as a config option
I also added a small Kconfig change that allows the user to specify the
virtio console in menuconfig.

(Fixes to export symbols from Stephen Rothwell <sfr@canb.auug.org.au>)
(Fixes for CONFIG_VIRTIO_CONSOLE=y vs CONFIG_VIRTIO=m from Christian himself)

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
2008-07-25 12:06:07 +10:00
Christian Borntraeger 611e097d77 hvc_console: rework setup to replace irq functions with callbacks
This patch tries to change hvc_console to not use request_irq/free_irq if
the backend does not use irqs. This allows virtio_console to use hvc_console
without having a linker reference to request_irq/free_irq.

In addition, together with patch 2/3 it improves the performance for virtio
console input. (an earlier version of this patch was tested by Yajin on lguest)

The irq specific code is moved to hvc_irq.c and selected by the drivers that
use irqs (System p, System i, XEN).

I replaced "int irq" with the opaque "int data". The request_irq and
free_irq calls are replaced with notifier_add and notifier_del. I have also
changed the code a bit to call the notifier_add and notifier_del inside the
spinlock area as the callbacks are found via hp->ops.

Changes since last version:
o remove ifdef
o reintroduce "irq_requested" as "notified"
o cleanups, sparse..

I did not move the timer based polling into a separate polling scheme. I
played with several variants, but it seems we need to sleep/schedule in
a thread even for irq based consoles, as there are throttleing and buffer
size constraints.

I also kept hvc_struct defined in hvc_console.h so that hvc_irq.c can access
the irq_requested element.

Feedback is appreciated. virtio_console is currently the only available console
for kvm on s390. I plan to push this change as soon as all affected parties
agree on it. I would love to get test results from System p, Xen etc.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2008-07-25 12:06:06 +10:00
Yoichi Yuasa 18b095d4b8 drivers/char: remove old broken Cobalt LCD driver
Remove old broken Cobalt LCD driver.

Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-24 10:47:40 -07:00
Alan Cox faa7612c09 specialix: restore driver using new break functionality
Use the hardware break support on the specialix driver

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-22 13:03:28 -07:00
Alan Cox 781cff5cb2 riscom8: Restore driver using new break functionality
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-22 13:03:28 -07:00
Alan Cox 6d88972433 isicom: restore using hardware break support
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-22 13:03:28 -07:00
Alan Cox dcbf128079 epca: Restore driver
Convert the driver to use the added hardware break support

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-22 13:03:28 -07:00
Alan Cox 9e98966c7b tty: rework break handling
Some hardware needs to do break handling itself and may have partial
support only. Make break_ctl return an error code. Add a tty driver flag
so you can indicate driver hardware side break support.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-22 13:03:28 -07:00
Alan Cox abbe629ae4 tty: Mark unconverted drivers as BROKEN
Nobody seems to use these drivers anyway so if they want them they can
fix them up. I don't have the needed info to add break_ctl support to them.
Send patches if you don't like it.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-22 13:03:27 -07:00
Alan Cox d2fbd0f2f9 specialix: Code cleanups
Go through the inlines and other oddments that are iffy. Remove various bits
of dead code and bogus debug. Turn the crtsdts compile time option into a
runtime switch.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-22 13:03:27 -07:00
Sonny Rao fe9e8d5377 powerpc: Add driver for Barrier Synchronization Register
Adds a character driver for BSR support on IBM POWER systems including
Power5 and Power6.  The BSR is an optional processor facility not currently
implemented by any other processors.  It's primary purpose is fast large SMP
synchronization.  More details on the BSR are in comments to the code which
follows.  This patch adds BSR driver to pseries_defconfig.

Signed-off-by: Sonny Rao <sonnyrao@linux.vnet.ibm.com>
Signed-off-by: Joel Schopp <jschopp@austin.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2008-07-15 12:24:55 +10:00
David Brownell e6d2bb2bac rtc: make HPET_RTC_IRQ track HPET_EMULATE_RTC
More Kconfig tweaks related to the legacy PC RTC code:

 - Describe the legacy PC RTC driver as such ... it's never quite
   been clear that this driver is for PC RTCs, and now it's fair
   to call this the "legacy" driver.

 - Force it to understand about HPET stealing its IRQs ... kernel
   code does this always when HPET is in use, there should be no
   option for users to goof up the config.

This seems to fix kernel bugzilla #10729.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: Maxim Levitsky <maximlevitsky@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-06-12 18:05:42 -07:00
Roland.Kletzing 33dda515a1 drivers/char/ip2: fix Kconfig after ip2/ip2main merge
As commit 6089093e58 ("ip2: fix crashes on
load/unload") fixed the ip2 crashes on load/unload by making ip2/ip2main
one module (ip2), Kconfig shouldn't mention a now non-existing module.

Signed-off-by: Roland.Kletzing <devzero@web.de>
Acked-by: Alan Cox <alan@redhat.com>
Cc: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-06-06 11:29:09 -07:00
David Woodhouse a29ccf6f82 Make console charset translation optional
By turning off the new CONSOLE_TRANSLATIONS option and dropping the
associated code and tables from the kernel, we can save about 7KiB.

Taken from linux-tiny project by Tim Bird and mangled further by dwmw2.

Signed-off-by: Tim Bird <tim.bird@am.sony.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2008-06-04 14:56:12 +01:00
Jiri Slaby 4920916f72 char: select fw_loader by moxa
Select FW_LOADER since moxa needs it, otherwise we face link problems such
as:

drivers/built-in.o: In function
moxa_pci_probe':moxa.c:(.devinit.text+0x76d8): undefined reference to
request_firmware'
:moxa.c:(.devinit.text+0x7e6e): undefined reference to release_firmware'
make: *** [.tmp_vmlinux1] Error 1

Reported-by: Philippe Roussel <p.o.roussel@free.fr>
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-14 19:11:15 -07:00
Arjan van de Ven b781ecb6a3 make /dev/kmem a config option
Make /dev/kmem a config option; /dev/kmem is VERY rarely used, and when
used, it's generally for no good (rootkits tend to be the most common
users).  With this config option, users have the choice to disable
/dev/kmem, saving some size as well.

A patch to disable /dev/kmem has been in the Fedora and RHEL kernels for
4+ years now without any known problems or legit users of /dev/kmem.

[akpm@linux-foundation.org: make CONFIG_DEVKMEM default to y]
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-29 08:05:59 -07:00
David Brownell c750090085 rtc: avoid legacy drivers with generic framework
Kconfig tweaks to help reduce RTC configuration bugs, by avoiding
legacy RTC drivers when the generic RTC framework is enabled:

 - If rtc-cmos is selected, disable the legacy rtc driver;

 - When using generic RTC on x86, enable rtc-cmos by default;

 - In the old "chardev RTC" section of Kconfig, add a comment
   warning people off these (seven) legacy RTC drivers when
   the generic framework is in use.

People can still use the legacy drivers if they want (or need) to.

This doesn't fix the broken dependencies for the legacy "CMOS" RTC driver.
Ideally it would be a full list of platforms where it works, not a partial
list of ones where it won't.  Or better yet, it would depend on a
"HAVE_CMOS_RTC" flag defined by various platforms ...  surely there's a
Kconfig style guideline lurking there.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Acked-by: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-28 08:58:16 -07:00
Mike Frysinger 2dc63a84b2 Blackfin char driver for Blackfin on-chip OTP memory (v3)
initial char driver for otp memory
(only read supported atm ... needs real examples/docs for write support)

v2-v3:
 - fixup __initdata with __initconst, as we are heading for 2.6.26

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Acked-by: Jiri Slaby <jirislaby@gmail.com>
2008-04-25 08:04:56 +08:00
Adrian Bunk cc65d90fcf avr32: don't offer CONFIG_GEN_RTC
This patch fixes the following compile error:

<--  snip  -->

...
  CC [M]  drivers/char/genrtc.o
/home/bunk/linux/kernel-2.6/git/linux-2.6/drivers/char/genrtc.c:58:21: error: asm/rtc.h: No such file or directory
...
make[3]: *** [drivers/char/genrtc.o] Error 1

<--  snip  -->

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-04-19 20:40:09 -04:00
Adrian Bunk 17015aafd6 avr32: don't offer CONFIG_RTC
This patch fixes the following compile error:

<--  snip  -->

...
  CC [M]  drivers/char/rtc.o
In file included from /home/bunk/linux/kernel-2.6/git/linux-2.6/drivers/char/rtc.c:70:
/home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/mc146818rtc.h:16:59: error: asm/mc146818rtc.h: No such file or directory
...
make[3]: *** [drivers/char/rtc.o] Error 1

<--  snip  -->

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-04-19 20:40:09 -04:00
Carlos Corbacho 018a651a9c sonypi - Move sonypi.txt to Documentation/laptops
Also update references to sonypi.txt in Kconfig.

Signed-off-by: Carlos Corbacho <carlos@strangeworlds.co.uk>
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
CC: Mattia Dongili <malattia@linux.it>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-02-09 04:15:53 -05:00
Linus Torvalds 3796958130 Merge branch 'for-2.6.25' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
* 'for-2.6.25' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (69 commits)
  [POWERPC] Add SPE registers to core dumps
  [POWERPC] Use regset code for compat PTRACE_*REGS* calls
  [POWERPC] Use generic compat_sys_ptrace
  [POWERPC] Use generic compat_ptrace_request
  [POWERPC] Use generic ptrace peekdata/pokedata
  [POWERPC] Use regset code for PTRACE_*REGS* requests
  [POWERPC] Switch to generic compat_binfmt_elf code
  [POWERPC] Switch to using user_regset-based core dumps
  [POWERPC] Add user_regset compat support
  [POWERPC] Add user_regset_view definitions
  [POWERPC] Use user_regset accessors for GPRs
  [POWERPC] ptrace accessors for special regs MSR and TRAP
  [POWERPC] Use user_regset accessors for SPE regs
  [POWERPC] Use user_regset accessors for altivec regs
  [POWERPC] Use user_regset accessors for FP regs
  [POWERPC] mpc52xx: fix compile error introduce when rebasing patch
  [POWERPC] 4xx: PCIe indirect DCR spinlock fix.
  [POWERPC] Add missing native dcr dcr_ind_lock spinlock
  [POWERPC] 4xx: Fix offset value on Warp board
  [POWERPC] 4xx: Add 440EPx Sequoia ehci dts entry
  ...
2008-02-07 09:02:26 -08:00
Jiri Slaby 1c45607ad3 Char: mxser, remove it
(Old) mxser is obsoleted by mxser_new and scheduled for removal on Dec 2007.
Remove it by renaming mxser_new to mxser.

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Reviewed-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-07 08:42:34 -08:00
Thomas Bogendoerfer f5d3f30d0a char: use SGI_HAS_DS1286 for SGI_DS1286 depends
Use SGI_HAS_DS1286 for SGI_DS1286 depends

Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-06 10:41:06 -08:00
Jeff Garzik d9afa43532 riscom8: fix SMP brokenness
After analyzing the elements that save_flags/cli/sti/restore_flags were
protecting, convert their usages to a global spinlock (the easiest and
most obvious next-step).  There were some usages of flags being
intentionally cached, because the code already knew the state of
interrupts.  These have been taken into account.

This allows us to remove CONFIG_BROKEN_ON_SMP.  Completely untested.

[akpm@linux-foundation.org: use DEFINE_SPINLOCK]
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-06 10:41:00 -08:00
Stephen Neuendorffer ef141a0bb0 [POWERPC] Xilinx: hwicap driver
This includes code for new fifo-based xps_hwicap in addition to the
older opb_hwicap, which has a significantly different interface.  The
common code between the two drivers is largely shared.

Significant differences exists between this driver and what is
supported in the EDK drivers.  In particular, most of the
architecture-specific code for reconfiguring individual FPGA resources
has been removed.  This functionality is likely better provided in a
user-space support library.  In addition, read and write access is
supported.  In addition, although the xps_hwicap cores support
interrupt-driver mode, this driver only supports polled operation, in
order to make the code simpler, and since the interrupt processing
overhead is likely to slow down the throughput under Linux.

Signed-off-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2008-02-06 10:23:52 -07:00
Frank Seidel 20fd1e3bea nozomi driver
This is a driver to control the cardbus wireless data card that works on
3g networks.

Greg Kroah-Hartman <gregkh@suse.de> did the initial driver cleanup.
Thanks to Arnaud Patard <apatard@mandriva.com> for help with bugfixing.
Thanks to Alan Cox for a lot of tty fixes.
Thanks to Satyam Sharma <satyam@infradead.org> for fixing buildbreakage.
Thanks to Frank Seidel <fseidel@suse.de> for a lot of bugfixes and
rewriting to make it a sane Linux driver
Thanks to Jiri Slaby <jirislaby@gmail.com> for a lot bugfixes, cleanups
and rewrites that make it much more readable.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Frank Seidel <fseidel@suse.de>
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
2008-01-24 20:40:04 -08:00
Johann Felix Soden 889c94a14e Fix file references in documentation and Kconfig
Fix typo in arch/powerpc/boot/flatdevtree_env.h.
There is no Documentation/networking/ixgbe.txt.

README.cycladesZ is now in Documentation/.
wavelan.p.h is now in drivers/net/wireless/.
HFS.txt is now Documentation/filesystems/hfs.txt.
OSS-files are now in sound/oss/.

Signed-off-by: Johann Felix Soden <johfel@users.sourceforge.net>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-01-22 10:43:36 -08:00
Romain Liévin cb8c9b6de0 tipar: remove obsolete module
tipar: remove obsolete module

The tipar character driver was used to implement bit-banging access
to Texas Instruments parallel link cable. A user-land method now 
exists thru PPDEV & PARPORT.

Signed-off-by: Romain Liévin <roms@lpg.ticalc.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-12-17 10:33:18 -08:00
Kay Sievers 345ee8392d allow LEGACY_PTYS to be set to 0
The count of legacy pty devices can be set by a kernel commandline
parameter. For the distro kernel, we would like to disable all pty's
by default, but keep the opportunity to request devices on the kernel
commandline.

Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Acked-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-11-28 13:53:52 -08:00
Rusty Russell 31610434bc Virtio console driver
This is an hvc-based virtio console driver.  It's suboptimal becuase
hvc expects to have raw access to interrupts and virtio doesn't assume
that, so it currently polls.

There are two solutions: expose hvc's "kick" interface, or wean off hvc.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2007-10-23 15:49:55 +10:00
Linus Torvalds ab08ed1770 Merge git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog
* git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog:
  mv watchdog tree under drivers
2007-10-18 14:56:25 -07:00
Jan Engelhardt 77bf2bab91 Remove CONFIG_VT_UNICODE
Since default_utf8 is already a sysfs attribute, having an extra
CONFIG_VT_UNICODE compile-time option is redundant, since sysfs attributes can
be set at boot and run time.

Also let Linux VCs default to UTF-8 (as per the discussion at
http://lkml.org/lkml/2007/9/6/99).

Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de>
Cc: Bill Nottingham <notting@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-18 14:37:17 -07:00
Wim Van Sebroeck b7e04f8c61 mv watchdog tree under drivers
move watchdog tree from drivers/char/watchdog to drivers/watchdog.

Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2007-10-18 10:39:03 +00:00
Rusty Russell 2d1df8153c HVC console is also used by iSeries, so add that to HVC_DRIVER help.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Acked-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17 08:43:00 -07:00
Rusty Russell 3e6c6f630a Delay creation of khcvd thread
This changes hvc_init() to be called only when someone actually uses the
hvc_console driver.  Dave Jones complained when profiling bootup.

hvc_console used to only be for Power aka pSeries: now lguest and Xen both
want it built-in in case the kernel is a guest under one of those, even
though usually it will be a native boot.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17 08:43:00 -07:00
Bill Nottingham 2e8ecb9db0 add CONFIG_VT_UNICODE
As of now, the kernel defaults to non-unicode and XLATE for the keyboard.
We've been changing this in Fedora, but that requires patching the defaults
in the kernel.

The attached introduces CONFIG_VT_UNICODE, which sets the console in
unicode mode by default on boot, including both the virtual terminal and
the keyboard driver.

Signed-off-by: Bill Nottingham <notting@redhat.com>
Cc: Samuel Thibault <samuel.thibault@ens-lyon.org>
Cc: Dmitry Torokhov <dtor@mail.ru>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17 08:42:56 -07:00
Randy Dunlap 179b025fea video gfx: merge kconfig menus
Move AGP and DRM menus into the video graphics support menu.
  They use 'menuconfig' so that they can all be disabled with
  one selection.
Make the console menu use 'menuconfig' so that it can all be
  disabled with one selection.
Make the frame buffer menu use 'menuconfig' so that it can all be
  disabled with one selection.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Acked-by: Dave Airlie <airlied@linux.ie>
Signed-off-by: Antonino Daplas <adaplas@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-16 09:43:20 -07:00
Jiri Slaby ee2077d97b Char: cyclades, select FW_LOADER
Fix link errors below by selecting FW_LOADER
  LD      .tmp_vmlinux1
drivers/built-in.o: In function `cyz_load_fw':
drivers/char/cyclades.c:4908: undefined reference to `request_firmware'
drivers/char/cyclades.c:4979: undefined reference to `release_firmware'

Cc: <toralf.foerster@gmx.de>
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-26 11:35:19 -07:00
Al Viro 2240598c24 [SPARC32]: Deal with rtc/sun_mostek_rtc conflict.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-24 13:24:32 -07:00
David S. Miller cdee99d746 [SPARC64]: Stop using drivers/char/rtc.c
The existing sparc64 mini_rtc driver can handle CMOS based
rtcs trivially with just a few lines of code and the simplifies
things tremendously.

Tested on SB1500.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-20 17:15:48 -07:00
Al Viro 8a0236743e more isa/eisa/pci-only drivers marked as such
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-20 08:24:49 -07:00
Jeremy Fitzhardinge b536b4b962 xen: use the hvc console infrastructure for Xen console
Implement a Xen back-end for hvc console.

* * *
Add early printk support via hvc console, enable using
"earlyprintk=xen" on the kernel command line.

From: Gerd Hoffmann <kraxel@suse.de>
Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Acked-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Olof Johansson <olof@lixom.net>
2007-07-18 08:47:44 -07:00
Maciej W. Rozycki 8b4a40809e zs: move to the serial subsystem
This is a reimplementation of the zs driver for the serial subsystem.  Any
resemblance to the old driver is purely coincidential.  ;-) I do hope I got
the handling of modem lines right -- better do not tackle me about the
issue unless you feel too good...

Any users of the old driver: please note the numbers of the serial lines
have now been swapped, i.e.  ttyS0 <-> ttyS1 and ttyS2 <-> ttyS3.  It has
to do with the modem lines mentioned above; basically the port A in a given
chip has to be initialised before the port B if you want to use the latter
as the serial console (which is usually the case), as operations on modem
lines of the serial line associated with the port B access both ports (see
the comment at the top of the driver for the details of wiring used).
Please update your scripts.

This is also the reason each SCC now requests an IRQ once only (as seen in
"/proc/interrupts") -- the handler takes care of both ports at once as the
line associated with the port B has to take status update interrupts from
both ports (and yet the line of the port A takes its own for itself too).
The old driver never got it right...

Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-18 08:38:22 -07:00
Al Viro 27d4171815 mark a bunch of ISA|EISA|PCI drivers as such
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-17 11:01:07 -07:00
Jiri Slaby 8b3929a2da Char: Kconfig, mxser_new: remove experimental comment
Kconfig, mxser_new: remove experimental comment

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-17 10:23:10 -07:00
Dave Jones abd4aa5a97 undeprecate raw driver
Despite repeated attempts over the last two and half years, this driver
seems somewhat persistant.  Remove its deprecated status as it has existing
users who may not be in a position to migrate their apps to O_DIRECT.

Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-16 09:05:46 -07:00
Ralf Baechle 33f60da0da [CHAR] Delete leftovers of old Alchemy UART driver
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-07-13 17:39:59 +01:00
Ralf Baechle fdc1f93847 [MIPS] Don't use genrtc.
The only pseudo-legitimate MIPS user of genrtc was a systems that doesn't
have an RTC in hardware at all.  At this point faking one is a little
pointless ...
2007-07-12 17:41:21 +01:00
Paul Mundt 69d87daa18 sh: disable genrtc support.
sh never had support for this, so remove the option entirely.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-05-21 14:34:04 +09:00
Martin Schwidefsky 61d48c2c31 [S390] Kconfig: use common Kconfig files for s390.
Disband drivers/s390/Kconfig, use the common Kconfig files. The s390
specific config options from drivers/s390/Kconfig are moved to the
respective common Kconfig files.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2007-05-10 15:46:08 +02:00
Martin Schwidefsky abf3ea1b54 [S390] Kconfig: common config options for s390.
Disable some configuration options in the common Kconfig files that
are of no interest to a s390 machine. Enable hangcheck timer.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2007-05-10 15:46:08 +02:00
Martin Schwidefsky eeca7a36a8 [S390] Kconfig: refine depends statements.
Refine some depends statements to limit their visibility to the
environments that are actually supported.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2007-05-10 15:46:07 +02:00
Stephen Rothwell b15f792faf [POWERPC] iSeries: Make HVC_ISERIES the default
This makes the new iSeries virtual console drivers (nvc_iseries) the
default and prevents viocons being built unless explicitly selected.
Also it makes no sense to have the console as a module.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-05-09 16:35:00 +10:00
Jiri Slaby cff9494fad Char: cyclades, depends on PCI or ISA
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08 11:15:24 -07:00
Russell King 4f911d64e0 Make /dev/port conditional on config symbol
Instead of having /dev/port support dependent in multiple places on a
string of preprocessor symbols, define a new configuration directive for
it.  This ensures that all four places remain consistent with each other.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08 11:15:07 -07:00
Yoichi Yuasa 0976251676 rename TANBAC TB0219 config
Rename config for TANBAC TB0219 GPIO support to something more appropriate.

Fixes this:

drivers/char/Kconfig:906:warning: type of 'TANBAC_TB0219' redefined from 'boolean' to 'tristate'
drivers/char/Kconfig:907:warning: choice values currently only support a single
prompt

Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-07 12:13:04 -07:00
Ralf Baechle 96fac9dc95 [PATCH] Wire up DEC serial drivers in Kconfig
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-03-29 08:22:25 -07:00
Mark Gross 03154a2710 [PATCH] minor updat to tlclk Kconfig entry
The tlclk driver is going on the MPCBL005 so I need to make the Kconfig
more more generic.  Just some text changes.

Signed-off-by: Mark Gross <mark.gross@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-03-06 18:02:22 -08:00
Jiri Slaby 98c47ea28a [PATCH] Char: mxser, obsolete old, nonexperimental new
Mark v 1.x as obsolete and v 2.x as non-experimental in Kconfig.

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-11 10:51:28 -08:00
Ishizaki Kou 3cdc20e517 [POWERPC] Celleb: hypervisor console driver
This patch adds hypervisor console driver for Celleb platform.

Signed-off-by: Kou Ishizaki <kou.ishizaki@toshiba.co.jp>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-02-07 14:03:21 +11:00
Al Viro 3b4709a6cd [PATCH] CONFIG_COMPUTONE should depend on ISA|EISA|PCI
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-13 09:05:52 -08:00
Jiri Slaby 3468a33e98 [PATCH] sx: fix non-PCI build
When CONFIG_PCI is not defined (i.e.  PCI bus is disabled), the sx driver
fails to link, since some pci functions are not available.  Fix this
behaviour to be able to compile this driver on machines with no PCI bus
(but with ISA bus support).

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-13 09:05:49 -08:00
Jiri Slaby fb0c9295b8 [PATCH] mxser_new: fix non-PCI build
When CONFIG_PCI is not defined (i.e.  PCI bus is disabled), the mxser_new
driver fails to link, since some pci functions are not available.  Fix this
behaviour to be able to compile this driver on machines with no PCI bus
(but with ISA bus support).

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-13 09:05:49 -08:00
Randy Dunlap a3808ac156 [PATCH] isicom: fix build with PCI disabled
With CONFIG_PCI=n:
drivers/char/isicom.c: In function 'isicom_probe':
drivers/char/isicom.c:1793: warning: implicit declaration of function
'pci_request_region'
drivers/char/isicom.c:1827: warning: implicit declaration of function
'pci_release_region'

Let's CONFIG_ISI depend on CONFIG_PCI.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-13 09:05:48 -08:00
Robert P. J. Day bef1f40261 kconfig: Standardize "depends" -> "depends on" in Kconfig files
Standardize the miniscule percentage of occurrences of "depends" in
Kconfig files to "depends on", and update kconfig-language.txt to
reflect that.

Signed-off-by: Robert P. J. Day <rpjday@mindspring.com>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-12-12 20:04:19 +01:00
Jiri Slaby 037ad48bdb [PATCH] mxser: make an experimental clone
Clone a new driver for moxa smartio devices by copying mxser.c to mxser_new.c
and mxser.h to mxser_new.h.  No other changes are made.

This is for purposes of updating the driver to the latest vendor version.

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-08 08:28:53 -08:00
Jeff Garzik d916faace3 Remove long-unmaintained ftape driver subsystem.
It's bitrotten, long unmaintained, long hidden under BROKEN_ON_SMP,
etc.  As scheduled in feature-removal-schedule.txt, and ack'd several
times on lkml.

Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-12-03 22:22:41 -05:00
Matt LaPlante 3cb2fccc5f Fix misc Kconfig typos
Fix various Kconfig typos.

Signed-off-by: Matt LaPlante <kernel1@cyberdogtech.com>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-11-30 05:22:59 +01:00
Jes Sorensen 1a4b0fc503 [PATCH] mspec driver build fix
Fix MSPEC driver to build for non SN2 enabled configs as the driver should
work in cached and uncached modes (no fetchop) on these systems.  In
addition make MSPEC select IA64_UNCACHED_ALLOCATOR, which is required for
it and move it to arch/ia64/Kconfig to avoid warnings on non ia64
architectures running allmodconfig.  Once the Kconfig code is fixed, we can
move it back.

Signed-off-by: Jes Sorensen <jes@sgi.com>
Cc: Fernando Luis Vzquez Cao <fernando@oss.ntt.co.jp>
Cc: "Luck, Tony" <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-11-13 07:40:42 -08:00
Geert Uytterhoeven 4d99bfac9d [PATCH] CONFIG_TELCLOCK depends on X86
The telecom clock driver for MPBL0010 ATCA SBC depends on X86

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Mark Gross <mark.gross@intel.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-16 12:19:03 -07:00
Yoichi Yuasa af8b128719 [MIPS] Remove IT8172-based platforms, ITE 8172G and Globespan IVR support.
As per feature-removal-schedule.txt.

Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Acked-by: Alan Cox <alan@redhat.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-10-03 17:59:17 +01:00
David Howells 9361401eb7 [PATCH] BLOCK: Make it possible to disable the block layer [try #6]
Make it possible to disable the block layer.  Not all embedded devices require
it, some can make do with just JFFS2, NFS, ramfs, etc - none of which require
the block layer to be present.

This patch does the following:

 (*) Introduces CONFIG_BLOCK to disable the block layer, buffering and blockdev
     support.

 (*) Adds dependencies on CONFIG_BLOCK to any configuration item that controls
     an item that uses the block layer.  This includes:

     (*) Block I/O tracing.

     (*) Disk partition code.

     (*) All filesystems that are block based, eg: Ext3, ReiserFS, ISOFS.

     (*) The SCSI layer.  As far as I can tell, even SCSI chardevs use the
     	 block layer to do scheduling.  Some drivers that use SCSI facilities -
     	 such as USB storage - end up disabled indirectly from this.

     (*) Various block-based device drivers, such as IDE and the old CDROM
     	 drivers.

     (*) MTD blockdev handling and FTL.

     (*) JFFS - which uses set_bdev_super(), something it could avoid doing by
     	 taking a leaf out of JFFS2's book.

 (*) Makes most of the contents of linux/blkdev.h, linux/buffer_head.h and
     linux/elevator.h contingent on CONFIG_BLOCK being set.  sector_div() is,
     however, still used in places, and so is still available.

 (*) Also made contingent are the contents of linux/mpage.h, linux/genhd.h and
     parts of linux/fs.h.

 (*) Makes a number of files in fs/ contingent on CONFIG_BLOCK.

 (*) Makes mm/bounce.c (bounce buffering) contingent on CONFIG_BLOCK.

 (*) set_page_dirty() doesn't call __set_page_dirty_buffers() if CONFIG_BLOCK
     is not enabled.

 (*) fs/no-block.c is created to hold out-of-line stubs and things that are
     required when CONFIG_BLOCK is not set:

     (*) Default blockdev file operations (to give error ENODEV on opening).

 (*) Makes some /proc changes:

     (*) /proc/devices does not list any blockdevs.

     (*) /proc/diskstats and /proc/partitions are contingent on CONFIG_BLOCK.

 (*) Makes some compat ioctl handling contingent on CONFIG_BLOCK.

 (*) If CONFIG_BLOCK is not defined, makes sys_quotactl() return -ENODEV if
     given command other than Q_SYNC or if a special device is specified.

 (*) In init/do_mounts.c, no reference is made to the blockdev routines if
     CONFIG_BLOCK is not defined.  This does not prohibit NFS roots or JFFS2.

 (*) The bdflush, ioprio_set and ioprio_get syscalls can now be absent (return
     error ENOSYS by way of cond_syscall if so).

 (*) The seclvl_bd_claim() and seclvl_bd_release() security calls do nothing if
     CONFIG_BLOCK is not set, since they can't then happen.

Signed-Off-By: David Howells <dhowells@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2006-09-30 20:52:31 +02:00
Ben Dooks d202a6c088 [PATCH] Remove old drivers/char/s3c2410_rtc.c
This can now be removed, since there is now a drivers/rtc/rtc-s3c.c driver.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-29 09:18:13 -07:00
Linus Torvalds b98adfccdf Merge master.kernel.org:/pub/scm/linux/kernel/git/lethal/sh-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/lethal/sh-2.6: (108 commits)
  sh: Fix occasional flush_cache_4096() stack corruption.
  sh: Calculate shm alignment at runtime.
  sh: dma-mapping compile fixes.
  sh: Initial vsyscall page support.
  sh: Clean up PAGE_SIZE definition for assembly use.
  sh: Selective flush_cache_mm() flushing.
  sh: More intelligent entry_mask/way_size calculation.
  sh: Support for L2 cache on newer SH-4A CPUs.
  sh: Update kexec support for API changes.
  sh: Optimized readsl()/writesl() support.
  sh: Report movli.l/movco.l capabilities.
  sh: CPU flags in AT_HWCAP in ELF auxvt.
  sh: Add support for 4K stacks.
  sh: Enable /proc/kcore support.
  sh: stack debugging support.
  sh: select CONFIG_EMBEDDED.
  sh: machvec rework.
  sh: Solution Engine SH7343 board support.
  sh: SH7710VoIPGW board support.
  sh: Enable verbose BUG() support.
  ...
2006-09-27 08:49:07 -07:00
Jes Sorensen 17a3b05047 [PATCH] mspec driver
Implement the special memory driver (mspec) based on the do_no_pfn
approach.  The driver is currently used only on SN2 hardware with special
fetchop support but could be beneficial on other architectures using the
uncached mode.

Signed-off-by: Jes Sorensen <jes@sgi.com>
Cc: Hugh Dickins <hugh@veritas.com>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-27 08:26:13 -07:00
Paul Mundt 91550f715b sh: Kill off the rest of the legacy rtc mess.
With the new RTC class driver, we can get rid of most of the
old left over cruft.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 17:45:01 +09:00
Paul Mackerras 2818c5dec5 [POWERPC] Only offer CONFIG_BRIQ_PANEL if CONFIG_PPC_CHRP is enabled
since only the briQ has a briQ front panel, and the briQ is a CHRP and
is only supported if CONFIG_PPC_CHRP is set.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-08-25 15:08:21 +10:00
Andrew Morton 4288b92b96 [POWERPC] briq_panel Kconfig fix
drivers/char/briq_panel.c:28:22: error: asm/prom.h: No such file or directory

Cc: Jeremy Kerr <jk@ozlabs.org>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-07-31 15:55:04 +10:00
Stephen Rothwell 8bff05b052 [POWERPC] iseries: A new iSeries console
This driver uses the hvc_console.c infrastructure that is used by the
pSeries virtual and RTAS consoles.  This will allow us to make viocons.c
obsolete and is another step along the way to a combined kernel (as
viocons could not coexist with CONFIG_VT).

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
2006-07-13 18:51:22 +10:00
Benjamin Herrenschmidt a45b83957d [POWERPC] Add support for briq front panel
This adds the driver for the Briq front panel. This is a cleaned up
version of a driver that has been floating around for some time now,
initially written by Karsten Jeppesen <karsten@jeppesens.com> and
cleaned up by jk and myself.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-07-07 20:19:16 +10:00
Dave Jones 699352c30d [PATCH] GPIO for SCx200 & PC-8736x: x86-only
AFAICT, this is x86 only, so the patch below is needed to stop this new
option showing up on PPC, IA64, etc..

Signed-off-by: Dave Jones <davej@redhat.com>
Cc: Jim Cromie <jim.cromie@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-29 10:26:21 -07:00
Jim Cromie 7a8e2a5ea4 [PATCH] chardev: GPIO for SCx200 & PC-8736x: add proper Kconfig, Makefile entries
Replace the temp makefile hacks with proper CONFIG entries, which are also
added to Kconfig.

Signed-off-by: Jim Cromie <jim.cromie@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-27 17:32:43 -07:00
Antonino A. Daplas 13ae664589 [PATCH] VT binding: Make VT binding a Kconfig option
To enable this feature, CONFIG_VT_HW_CONSOLE_BINDING must be set to 'y'.  This
feature will default to 'n' to minimize users accidentally corrupting their
virtual terminals.

Signed-off-by: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-26 09:58:33 -07:00
Michael Buesch 844dd05fec [PATCH] Add new generic HW RNG core
Signed-off-by: Michael Buesch <mb@bu3sch.de>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-26 09:58:19 -07:00
Michael Buesch 59f5d35f83 [PATCH] Remove old HW RNG support
This patch series replaces the old non-generic Hardware Random Number
Generator support by a fully generic RNG API.

This makes it possible to register additional RNGs from modules.  With this
patch series applied, Laptops with a bcm43xx chip (PowerBook) have a HW RNG
available now.

Additionally two new RNG drivers are added for the "ixp4xx" and "omap"
devices.  (Written by Deepak Saxena).  This patch series includes the old
patches by Deepak Saxena.

The old x86-rng driver has beed split.

The userspace RNG daemon can later be updated to select the RNG through
/sys/class/misc/hw_random/ for convenience.  For now it is sufficient to use
cat and echo -n on the sysfs attributes.

Signed-off-by: Michael Buesch <mb@bu3sch.de>
Acked-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-26 09:58:19 -07:00
Yoichi Yuasa 584e1236bb [PATCH] add "select GPIO_VR41XX" for TANBAC_TB0229
TANBAC_TB0229 requires GPIO_VR41XX.  This patch adds "select GPIO_VR41XX"
for TANBAC_TB0229.

Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-25 10:01:22 -07:00
Alan Cox 655fdeab80 [PATCH] Final rio polish
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-05-15 11:20:57 -07:00
Yoichi Yuasa 8417eb7a16 [PATCH] RTC subsystem: VR41XX driver
This patch updates VR4100 series RTC driver.

* This driver supports new RTC subsystem.
* Simple set time/read time test worked fine.

Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-04-11 06:18:47 -07:00
Paul Mackerras bac30d1a78 Merge ../linux-2.6 2006-03-29 13:24:50 +11:00
Arnd Bergmann f4d1749e95 [PATCH] powerpc: add hvc backend for rtas
Current Cell hardware is using the console through a set
of rtas calls. This driver is needed to get console
output on those boards.

Signed-off-by: Arnd Bergmann <abergman@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-03-28 16:45:28 +11:00
Ryan S. Arnold 45d607ed92 [PATCH] powerpc: hvc_console updates
These are some updates from both Ryan and Arnd for the hvc_console
driver:

The main point is to enable the inclusion of a console driver
for rtas, which is currrently needed for the cell platform.

Also shuffle around some data-type declarations and moves some
functions out of include/asm-ppc64/hvconsole.h and into a new
drivers/char/hvc_console.h file.

Signed-off-by: "Ryan S. Arnold" <rsa@us.ibm.com>
Signed-off-by: Arnd Bergmann <abergman@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-03-28 16:45:26 +11:00
Alessandro Zummo 12b824fb15 [PATCH] RTC subsystem: ARM cleanup
This patch removes from the ARM subsytem some of the rtc-related functions
that have been included in the RTC subsystem.  It also fixes some naming
collisions.

Signed-off-by: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-27 08:44:50 -08:00
maximilian attems 5ff2a7e25d [PATCH] isicom: select FW_LOADER
The isicom driver uses request_firmware() and thus needs to select
FW_LOADER.

Signed-off-by: maximilian attems <maks@sternwelten.at>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-26 08:56:58 -08:00
Alan Cox db3185242a [PATCH] rio driver rework continued #5
Final polish.  There is no more save_flags/cli type locking left.  We also no
longer use the pcicopy function and file so they can go.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-24 07:33:29 -08:00
Anton Blanchard 8ac4fc53fe [PATCH] powerpc: dont allow old RTC to be selected
Now powerpc uses the generic RTC stuff we should not enable the old RTC.
Doing so will result in hangs at boot.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-03-23 14:40:16 +11:00
Al Viro 8ef9cf3181 [PATCH] synclink_gt is PCI-only
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2006-02-08 01:04:50 -05:00
Jan Glauber 3633b0475e [PATCH] s390: hangcheck timer support
Remove useless s390 define from hangcheck-timer, remove wrong definition of a
TOD second and other s390 ifdefs.  Use monotonic_clock instead.

Add hangcheck-timer option, copied from drivers/char/Kconfig.  This is ugly
but unless we have a big Kconfig cleanup we cannot include
drivers/char/Kconfig...

Signed-off-by: Jan Glauber <jan.glauber@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-01 08:53:24 -08:00
Adrian Bunk b480146fd1 ftape: remove some outdated information from Kconfig files
This patch removes some outdated information about the ftape driver like
pointers to no longer existing webpages from Kconfig files.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-01-15 01:57:47 +01:00
Alan Cox 33f0f88f1c [PATCH] TTY layer buffering revamp
The API and code have been through various bits of initial review by
serial driver people but they definitely need to live somewhere for a
while so the unconverted drivers can get knocked into shape, existing
drivers that have been updated can be better tuned and bugs whacked out.

This replaces the tty flip buffers with kmalloc objects in rings. In the
normal situation for an IRQ driven serial port at typical speeds the
behaviour is pretty much the same, two buffers end up allocated and the
kernel cycles between them as before.

When there are delays or at high speed we now behave far better as the
buffer pool can grow a bit rather than lose characters. This also means
that we can operate at higher speeds reliably.

For drivers that receive characters in blocks (DMA based, USB and
especially virtualisation) the layer allows a lot of driver specific
code that works around the tty layer with private secondary queues to be
removed. The IBM folks need this sort of layer, the smart serial port
people do, the virtualisers do (because a virtualised tty typically
operates at infinite speed rather than emulating 9600 baud).

Finally many drivers had invalid and unsafe attempts to avoid buffer
overflows by directly invoking tty methods extracted out of the innards
of work queue structs. These are no longer needed and all go away. That
fixes various random hangs with serial ports on overflow.

The other change in here is to optimise the receive_room path that is
used by some callers. It turns out that only one ldisc uses receive room
except asa constant and it updates it far far less than the value is
read. We thus make it a variable not a function call.

I expect the code to contain bugs due to the size alone but I'll be
watching and squashing them and feeding out new patches as it goes.

Because the buffers now dynamically expand you should only run out of
buffering when the kernel runs out of memory for real.  That means a lot of
the horrible hacks high performance drivers used to do just aren't needed any
more.

Description:

tty_insert_flip_char is an old API and continues to work as before, as does
tty_flip_buffer_push() [this is why many drivers dont need modification].  It
does now also return the number of chars inserted

There are also

tty_buffer_request_room(tty, len)

which asks for a buffer block of the length requested and returns the space
found.  This improves efficiency with hardware that knows how much to
transfer.

and tty_insert_flip_string_flags(tty, str, flags, len)

to insert a string of characters and flags

For a smart interface the usual code is

    len = tty_request_buffer_room(tty, amount_hardware_says);
    tty_insert_flip_string(tty, buffer_from_card, len);

More description!

At the moment tty buffers are attached directly to the tty.  This is causing a
lot of the problems related to tty layer locking, also problems at high speed
and also with bursty data (such as occurs in virtualised environments)

I'm working on ripping out the flip buffers and replacing them with a pool of
dynamically allocated buffers.  This allows both for old style "byte I/O"
devices and also helps virtualisation and smart devices where large blocks of
data suddenely materialise and need storing.

So far so good.  Lots of drivers reference tty->flip.*.  Several of them also
call directly and unsafely into function pointers it provides.  This will all
break.  Most drivers can use tty_insert_flip_char which can be kept as an API
but others need more.

At the moment I've added the following interfaces, if people think more will
be needed now is a good time to say

 int tty_buffer_request_room(tty, size)

Try and ensure at least size bytes are available, returns actual room (may be
zero).  At the moment it just uses the flipbuf space but that will change.
Repeated calls without characters being added are not cumulative.  (ie if you
call it with 1, 1, 1, and then 4 you'll have four characters of space.  The
other functions will also try and grow buffers in future but this will be a
more efficient way when you know block sizes.

 int tty_insert_flip_char(tty, ch, flag)

As before insert a character if there is room.  Now returns 1 for success, 0
for failure.

 int tty_insert_flip_string(tty, str, len)

Insert a block of non error characters.  Returns the number inserted.

 int tty_prepare_flip_string(tty, strptr, len)

Adjust the buffer to allow len characters to be added.  Returns a buffer
pointer in strptr and the length available.  This allows for hardware that
needs to use functions like insl or mencpy_fromio.

Signed-off-by: Alan Cox <alan@redhat.com>
Cc: Paul Fulghum <paulkf@microgate.com>
Signed-off-by: Hirokazu Takata <takata@linux-m32r.org>
Signed-off-by: Serge Hallyn <serue@us.ibm.com>
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: John Hawkes <hawkes@sgi.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-10 08:01:59 -08:00
Alexey Dobriyan aed615a95f [PATCH] Disable rio on 64-bit platforms
Do it via Kconfig rather than via #error.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-10 08:01:26 -08:00
Ben Gardner e329113ca4 [PATCH] i386: GPIO driver for AMD CS5535/CS5536
A simple driver for the CS5535 and CS5536 that allows a user-space program
to manipulate GPIO pins.  The CS5535/CS5536 chips are Geode processor
companion devices.

Signed-off-by: Ben Gardner <bgardner@wabtec.com>
Signed-off-by: Richard Knutsson <ricknu-0@student.ltu.se>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-10 08:01:24 -08:00
Paul Fulghum 705b6c7b34 [PATCH] new driver synclink_gt
New character device driver for the SyncLink GT and SyncLink AC families of
synchronous and asynchronous serial adapters

Signed-off-by: Paul Fulghum <paulkf@microgate.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-08 20:13:45 -08:00
David Howells 2919b51075 [PATCH] frv: suppress configuration of certain features for FRV
Suppress configuration of certain features for the FRV arch as they can't be
built for FRV at the moment:

 (*) RTC

 (*) HISAX_*

 (*) PARPORT_PC

 (*) VGA_CONSOLE

 (*) BINFMT_ELF

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-08 20:13:36 -08:00
Martin Schwidefsky 347a8dc3b8 [PATCH] s390: cleanup Kconfig
Sanitize some s390 Kconfig options.  We have ARCH_S390, ARCH_S390X,
ARCH_S390_31, 64BIT, S390_SUPPORT and COMPAT.  Replace these 6 options by
S390, 64BIT and COMPAT.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-06 08:33:53 -08:00
Adrian Bunk 0b57ee9e55 [SPARC]: introduce a SPARC Kconfig symbol
Introduce a Kconfig symbol SPARC that is defined on both the sparc and
sparc64 architectures.

This symbol makes some dependencies more readable.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2005-12-22 23:09:54 -08:00
Adrian Bunk ce37e5f903 [SPARC]: Fix RTC build failure.
On sparc and sparc64, the rtc driver doesn't compile with PCI support 
disabled.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2005-12-19 14:52:24 -08:00
Andrew Morton 0de502aa44 [PATCH] raw driver: Kconfig fix
CONFIG_MAX_RAW_DEVS should appear immediately after CONFIG_RAW_DRIVER.

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-12-12 08:57:46 -08:00
Benjamin Herrenschmidt 3136254ca5 [PATCH] powerpc: kill ppc64 rtc.c, use genrtc instead
This moves the rtas RTC callbacks to rtas-rtc.c in arch/powerpc/kernel,
and kills the rest of arch/ppc64/kernel/rtc.c which was just a duplicate
of the genrtc functionality. Also enable build of genrtc for
CONFIG_PPC64 (it just works are we already have the required callbacks)
and enable it in all defconfigs.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-14 16:36:08 +11:00
Mark Gross 1a80ba8827 [PATCH] Telecom Clock Driver for MPCBL0010 ATCA computer blade
Signed-off-by: Mark Gross <mgross@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-30 17:37:25 -08:00
Brian Gerst 0d078f6f96 [PATCH] CONFIG_IA32
Add CONFIG_X86_32 for i386.  This allows selecting options that only apply
to 32-bit systems.

(X86 && !X86_64) becomes X86_32
(X86 ||  X86_64) becomes X86

Signed-off-by: Brian Gerst <bgerst@didntduck.org>
Cc: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-30 17:37:10 -08:00
viro@ZenIV.linux.org.uk f91f4d923f [PATCH] gratuitous includes of asm/serial.h
Removed gratuitous includes of asm/serial.h in synklinkmp and ip2main.
Allows to remove the rest of "broken on sparc32" in drivers/char - this
stuff doesn't break the build anymore.  Since it got zero testing, it almost
certainly won't work there, though...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-09 10:31:58 -07:00
Alan Cox f2cf8e25ba [PATCH] Clean up the old digi support and rescue it
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-07 16:57:20 -07:00
Al Viro c0f2f761e1 [SPARC64]: Kconfig fix (GEN_RTC dependencies)
Yet another architecture not coverd by GEN_RTC - sparc64 never picked
it until now and it doesn't have asm/rtc.h to go with it, so it
wouldn't compile anyway (or have these ioctls in the user-visible
headers, for that matter).

FWIW, I'm very tempted to introduce ARCH_HAS_GEN_RTC and have it set
in arch/*/Kconfig for architectures that know what to do with this
stuff - for something supposedly generic the list of architectures
where it doesn't work is getting too long...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2005-09-05 23:35:41 -07:00
Al Viro 1d25240fcf [MOXA]: Fix this driver properly.
Actually, proper fix of that breakage is embarrassingly simple - it's yet
another gratitious leftover include of asm/segment.h, so incremental to the
previos would be removal of that BROKEN and removal of bogus include from
mxser.c itself.

Signed-off-by: David S. Miller <davem@davemloft.net>
2005-09-05 23:30:15 -07:00
Linus Torvalds e766f1cc59 Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6 2005-09-05 00:12:58 -07:00
Yoichi Yuasa 466adc66cf [PATCH] fix warning of TANBAC_TB0219 in drivers/char/Kconfig
$ make menuconfig
scripts/kconfig/mconf arch/i386/Kconfig
drivers/char/Kconfig:847:warning: 'select' used by config symbol
'TANBAC_TB0219' refer to undefined symbol 'PCI_VR41XX'

Here is a patch for this warning fix.

Signed-off-by: Yoichi Yuasa <yuasa@hh.iij4u.or.jp>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-05 00:06:04 -07:00
Yoichi Yuasa 63b799f9de [PATCH] mips: add TANBAC VR4131 multichip module
This patch has added TANBAC VR4131 multichip module in arch/mips/Kconfig

Signed-off-by: Yoichi Yuasa <yuasa@hh.iij4u.or.jp>
Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-05 00:06:04 -07:00