Commit Graph

145 Commits

Author SHA1 Message Date
Bin Wang ddb09754e6 uio: fix vma io range check in mmap
the vma range size is always page size aligned in mmap, while the
real io space range may not be page aligned, thus leading to range
check failure in the uio_mmap_physical().

for example, in a case of io range size "mem->size == 1KB", and we
have (vma->vm_end - vma->vm_start) == 4KB, due to "len" is aligned
to page size in do_mmap_pgoff().

now fix this issue by align mem->size to page size in the check.

Signed-off-by: Bin Wang <binw@marvell.com>
Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 14:11:06 -07:00
Daeseok Youn ca3c61f358 drivers: uio_dmem_genirq: Fix memory leak in uio_dmem_genirq_probe()
When platform_get_irq() is failed after "priv" allocated,
it need to free "priv". But the label of bad0 doesn't try
to free about "priv". So this patch changes that lable to "bad1".
But "bad1" has pm_runtime_disable() call, this function should
be called when uio_register_device() is failed. So it is moved
into handling error for uio_register_device().

Signed-off-by: Daeseok Youn <daeseok.youn@gmail.com>
Signed-off-by: Hans J. Koch <hjk@hansjkoch.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 14:11:06 -07:00
Aaro Koskinen 632fefaf1f uio: fix devm_request_irq usage
Commit e6789cd3df (uio: Simplify uio error
path by using devres functions) converted uio to use devm_request_irq().
This introduced a change in behaviour since the IRQ is associated with
the parent device instead of the created UIO device. The IRQ will remain
active after uio_unregister_device() is called, and some drivers will
crash because of this. The patch fixes this.

Signed-off-by: Aaro Koskinen <aaro.koskinen@nsn.com>
Cc: stable <stable@vger.kernel.org> # 3.13
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-20 08:49:17 -08:00
Greg Kroah-Hartman 138a6d7ea2 Merge 3.13-rc4 into char-misc-next
We want these fixes in here.
2013-12-16 16:11:28 -08:00
Jingoo Han 0f4054df0b uio: uio_mf624: remove DEFINE_PCI_DEVICE_TABLE macro
Don't use DEFINE_PCI_DEVICE_TABLE macro, because this macro
is not preferred.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-08 22:41:48 -08:00
Linus Torvalds b655028795 uio: we cannot mmap unaligned page contents
In commit 7314e613d5 ("Fix a few incorrectly checked
[io_]remap_pfn_range() calls") the uio driver started more properly
checking the passed-in user mapping arguments against the size of the
actual uio driver data.

That in turn exposed that some driver authors apparently didn't realize
that mmap can only work on a page granularity, and had tried to use it
with smaller mappings, with the new size check catching that out.

So since it's not just the user mmap() arguments that can be confused,
make the uio mmap code also verify that the uio driver has the memory
allocated at page boundaries in order for mmap to work.  If the device
memory isn't properly aligned, we return

  [ENODEV]
    The fildes argument refers to a file whose type is not supported by mmap().

as per the open group documentation on mmap.

Reported-by: Holger Brunck <holger.brunck@keymile.com>
Acked-by: Greg KH <gregkh@linuxfoundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-12-02 11:50:37 -08:00
Nicolin Chen 288342e9cc drivers/uio/uio_pruss.c: use gen_pool_dma_alloc() to allocate sram memory
Since gen_pool_dma_alloc() is introduced, we implement it to simplify code.

Signed-off-by: Nicolin Chen <b42378@freescale.com>
Cc: "Hans J. Koch" <hjk@hansjkoch.de>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-11-13 12:09:23 +09:00
Linus Torvalds 1071ec7bc2 Char/Misc patches for 3.13-rc1
Here's the big char/misc driver patchset for 3.13-rc1.
 
 Lots of stuff in here, including some new drivers for Intel's "MIC"
 co-processor devices, and a new eeprom driver.  Other things include the
 driver attribute cleanups, extcon driver updates, hyperv updates, and a
 raft of other miscellaneous driver fixes.
 
 All of these have been in linux-next for a while.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-3.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc patches from Greg KH:
 "Here's the big char/misc driver patchset for 3.13-rc1.

  Lots of stuff in here, including some new drivers for Intel's "MIC"
  co-processor devices, and a new eeprom driver.  Other things include
  the driver attribute cleanups, extcon driver updates, hyperv updates,
  and a raft of other miscellaneous driver fixes.

  All of these have been in linux-next for a while"

* tag 'char-misc-3.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (121 commits)
  misc: mic: Fixes for randconfig build errors and warnings.
  tifm: fix error return code in tifm_7xx1_probe()
  w1-gpio: Use devm_* functions
  w1-gpio: Detect of_gpio_error for first gpio
  uio: Pass pointers to virt_to_page(), not integers
  uio: fix memory leak
  misc/at24: avoid infinite loop on write()
  misc/93xx46: avoid infinite loop on write()
  misc: atmel_pwm: add deferred-probing support
  mei: wd: host_init propagate error codes from called functions
  mei: replace stray pr_debug with dev_dbg
  mei: bus: propagate error code returned by mei_me_cl_by_id
  mei: mei_cl_link remove duplicated check for open_handle_count
  mei: print correct device state during unexpected reset
  mei: nfc: fix memory leak in error path
  lkdtm: add tests for additional page permissions
  lkdtm: adjust recursion size to avoid warnings
  lkdtm: isolate stack corruption test
  mei: move host_clients_map cleanup to device init
  mei: me: downgrade two errors to debug level
  ...
2013-11-07 09:41:06 +09:00
Ben Hutchings e6418fcc8a uio: Pass pointers to virt_to_page(), not integers
Most architectures define virt_to_page() as a macro that casts its
argument such that an argument of type unsigned long will be accepted
without complaint.  However, the proper type is void *, and passing
unsigned long results in a warning on MIPS.

Compile-tested only.

Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-10-29 16:51:57 -07:00
Cong Ding 75f0aef622 uio: fix memory leak
we have to call kobject_put() to clean up the kobject after function
kobject_init(), kobject_add(), or kobject_uevent() is called.

Signed-off-by: Cong Ding <dinggnu@gmail.com>
Acked-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-10-29 16:36:54 -07:00
Linus Torvalds 7314e613d5 Fix a few incorrectly checked [io_]remap_pfn_range() calls
Nico Golde reports a few straggling uses of [io_]remap_pfn_range() that
really should use the vm_iomap_memory() helper.  This trivially converts
two of them to the helper, and comments about why the third one really
needs to continue to use remap_pfn_range(), and adds the missing size
check.

Reported-by: Nico Golde <nico@ngolde.de>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org.
2013-10-29 10:21:34 -07:00
Jingoo Han 37ecdbb012 uio: uio_sercos3: remove unnecessary pci_set_drvdata()
The driver core clears the driver data to NULL after device_release
or on probe failure. Thus, it is not needed to manually clear the
device driver data to NULL.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26 08:47:25 -07:00
Jingoo Han c7a8eb001f uio: uio_netx: remove unnecessary pci_set_drvdata()
The driver core clears the driver data to NULL after device_release
or on probe failure. Thus, it is not needed to manually clear the
device driver data to NULL.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26 08:47:25 -07:00
Jingoo Han 1129308885 uio: uio_mf624: remove unnecessary pci_set_drvdata()
The driver core clears the driver data to NULL after device_release
or on probe failure. Thus, it is not needed to manually clear the
device driver data to NULL.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26 08:47:25 -07:00
Jingoo Han 8a4c10f8ec uio: uio_cif: remove unnecessary pci_set_drvdata()
The driver core clears the driver data to NULL after device_release
or on probe failure. Thus, it is not needed to manually clear the
device driver data to NULL.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26 08:47:25 -07:00
Jingoo Han e56516867f uio: uio_aec: remove unnecessary pci_set_drvdata()
The driver core clears the driver data to NULL after device_release
or on probe failure. Thus, it is not needed to manually clear the
device driver data to NULL.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26 08:47:25 -07:00
Michal Simek e6789cd3df uio: Simplify uio error path by using devres functions
Using devres functions simplify driver error path.
- Use devm_kzalloc
- Use devm_request_irq

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26 08:46:45 -07:00
Fengguang Wu 497b46dbc6 drivers: uio: mf624_disable_interrupt() can be static
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Rostislav Lisovy <lisovy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26 08:45:42 -07:00
Linus Torvalds 542a086ac7 Driver core patches for 3.12-rc1
Here's the big driver core pull request for 3.12-rc1.
 
 Lots of tiny changes here fixing up the way sysfs attributes are
 created, to try to make drivers simpler, and fix a whole class race
 conditions with creations of device attributes after the device was
 announced to userspace.
 
 All the various pieces are acked by the different subsystem maintainers.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-3.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core patches from Greg KH:
 "Here's the big driver core pull request for 3.12-rc1.

  Lots of tiny changes here fixing up the way sysfs attributes are
  created, to try to make drivers simpler, and fix a whole class race
  conditions with creations of device attributes after the device was
  announced to userspace.

  All the various pieces are acked by the different subsystem
  maintainers"

* tag 'driver-core-3.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (119 commits)
  firmware loader: fix pending_fw_head list corruption
  drivers/base/memory.c: introduce help macro to_memory_block
  dynamic debug: line queries failing due to uninitialized local variable
  sysfs: sysfs_create_groups returns a value.
  debugfs: provide debugfs_create_x64() when disabled
  rbd: convert bus code to use bus_groups
  firmware: dcdbas: use binary attribute groups
  sysfs: add sysfs_create/remove_groups for when SYSFS is not enabled
  driver core: add #include <linux/sysfs.h> to core files.
  HID: convert bus code to use dev_groups
  Input: serio: convert bus code to use drv_groups
  Input: gameport: convert bus code to use drv_groups
  driver core: firmware: use __ATTR_RW()
  driver core: core: use DEVICE_ATTR_RO
  driver core: bus: use DRIVER_ATTR_WO()
  driver core: create write-only attribute macros for devices and drivers
  sysfs: create __ATTR_WO()
  driver-core: platform: convert bus code to use dev_groups
  workqueue: convert bus code to use dev_groups
  MEI: convert bus code to use dev_groups
  ...
2013-09-03 11:37:15 -07:00
Chen Gang 3cc1f95283 drivers: uio: Kconfig: add MMU dependancy for UIO
The User space I/O drivers are useful, only when user space meaningful
(MMU must be enabled).

So need let it depend on MMU, or can not pass compiling, the related
error (allmodconfig for H8300):

    CC [M]  drivers/uio/uio.o
  drivers/uio/uio.c: In function 'uio_mmap_physical':
  drivers/uio/uio.c:650:2: error: implicit declaration of function 'pgprot_noncached' [-Werror=implicit-function-declaration]
  drivers/uio/uio.c:650:20: error: incompatible types when assigning to type 'pgprot_t' from type 'int'

Signed-off-by: Chen Gang <gang.chen@asianux.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-08-30 14:19:46 -07:00
Rostislav Lisovy 06849faab5 drivers: uio: Add driver for Humusoft MF624 DAQ PCI card
Signed-off-by: Rostislav Lisovy <lisovy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-08-30 12:12:49 -07:00
Jingoo Han 08cb2e2148 drivers: uio_pdrv_genirq: use dev_get_platdata()
Use the wrapper function for retrieving the platform data instead of
accessing dev->platform_data directly. This is a cosmetic change
to make the code simpler and enhance the readability.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-08-30 12:10:53 -07:00
Jingoo Han 9585444754 drivers: uio_pruss: use dev_get_platdata()
Use the wrapper function for retrieving the platform data instead of
accessing dev->platform_data directly. This is a cosmetic change
to make the code simpler and enhance the readability.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-08-30 12:10:53 -07:00
Jingoo Han 31f5221327 drivers: uio_dmem_genirq: use dev_get_platdata()
Use the wrapper function for retrieving the platform data instead of
accessing dev->platform_data directly. This is a cosmetic change
to make the code simpler and enhance the readability.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-08-30 12:10:53 -07:00
Jingoo Han 440ab3b303 uio: uio_pruss: remove unnecessary platform_set_drvdata()
The driver core clears the driver data to NULL after device_release
or on probe failure. Thus, it is not needed to manually clear the
device driver data to NULL.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-08-27 21:39:16 -07:00
Uwe Kleine-König b65c4014ef uio: drop unused vma_count member in uio_device struct
vma_count is used write-only and so fails to be useful. So remove it.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-08-12 15:46:51 -07:00
Uwe Kleine-König 7294151d05 uio: provide vm access to UIO_MEM_PHYS maps
This makes it possible to let gdb access mappings of the process that is
being debugged.

uio_mmap_logical was moved and uio_vm_ops renamed to group related code
and differentiate to new stuff.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-08-12 15:46:51 -07:00
Michal Simek 26dac3c49d uio: Remove uio_pdrv and use uio_pdrv_genirq instead
The patch "UIO: fix uio_pdrv_genirq with device tree but no interrupt"
(sha1: e3a3c3a205)
add support to use this driver with no interrupts.
uio_pdrv_genirq also supports device-tree binding
which is not available in uio_pdrv.

That's why this uio_pdrv driver can be just removed.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Vitalii Demianets <vitas@nppfactor.kiev.ua>
Reviewed-by: Pavel Machek <pavel@denx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-07-26 17:54:30 -07:00
Greg Kroah-Hartman c9dce927e9 UIO: convert class code to use dev_groups
The dev_attrs field of struct class is going away soon, dev_groups
should be used instead.  This converts the uio class code to use the
correct field.

Cc: Hans J. Koch <hjk@hansjkoch.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-07-24 15:39:05 -07:00
Libin 52c2dad914 uio: use vma_pages() to replace (vm_end - vm_start) >> PAGE_SHIFT
(*->vm_end - *->vm_start) >> PAGE_SHIFT operation is implemented
as a inline funcion vma_pages() in linux/mm.h, so using it.

Signed-off-by: Libin <huawei.libin@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-03 16:07:26 -07:00
Sachin Kamat cee4fbd6cd drivers: uio_pdrv_genirq: Use of_match_ptr() macro
This eliminates having an #ifdef returning NULL for the case
when OF is disabled.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-06-25 17:22:30 -07:00
Vitalii Demianets 34cb275283 UIO: Fix concurrency issue
In a SMP case there was a race condition issue between
uio_pdrv_genirq_irqcontrol() running on one CPU and irq handler on
another CPU. Fix it by spin_locking shared resources access inside irq
handler.  Also:
  - Change disable_irq to disable_irq_nosync to avoid deadlock, because
    disable_irq waits for the completion of the irq handler;
  - Change atomic bit-manipulation routines to their non-atomic
    counterparts as we already are guarding the code by spinlock.

Signed-off-by: Vitalii Demianets <vitas@nppfactor.kiev.ua>
Reviewed-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-06-24 16:31:21 -07:00
Sachin Kamat 077797117d drivers: uio_dmem_genirq: Use of_match_ptr() macro
This eliminates having an #ifdef returning NULL for the case
when OF is disabled.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Acked-by: Damian Hobson-Garcia <dhobsong@igel.co.jp>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-06-24 16:29:59 -07:00
Pavel Machek e3a3c3a205 UIO: fix uio_pdrv_genirq with device tree but no interrupt
If device is initialized from device tree, but has no interrupt
assigned, uio will still try to request and interrupt old way,
fails, and fails registration.

This is wrong; don't try initializing irq using platform data if
device tree is available.

Simplified code based on suggestion by Grant Likely.

Fixed memory leak in "irq can not be registered" error path.

Signed-off-by: Pavel Machek <pavel@denx.de>
Reported-by: Detlev Zundel <dzu@denx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-06-18 15:44:59 -07:00
Pavel Machek 05c3e0bb56 UIO: allow binding uio_pdrv_genirq.c to devices using command line option
This adds ability to bind uio driver to given open firmware device
using command line option. Thus, userspace driver can be developed and
used without modifying the kernel.

Signed-off-by: Pavel Machek <pavel@denx.de>
Tested-by: Detlev Zundel <dzu@denx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-06-18 15:44:59 -07:00
Emil Goode cb3771b049 uio: uio_pruss: Fix potential NULL pointer dereference
In function pruss_probe we free gdev and try to use
it on the next line. I have moved the dereference to
above the kfree of gdev.

Signed-off-by: Emil Goode <emilgoode@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-06-06 12:54:09 -07:00
Greg Kroah-Hartman f35c69b736 Merge 3.10-rc3 into char-misc-next
We want the changes in here.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-05-27 10:40:19 +09:00
Peter Huewe cd4373984a uio/uio_pci_generic: Use module_pci_driver to register driver
Removing some boilerplate by using module_pci_driver instead of calling
register and unregister in the otherwise empty init/exit functions.

It removes a pr_info showing some details about the driver, but
these infos can also be retrieved by using modinfo.

The name of the pci_driver struct had to be changed in order to prevent a
build failure.

Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-05-21 13:59:25 -07:00
Geert Uytterhoeven 89fb9e7c34 uio: UIO_DMEM_GENIRQ should depend on HAS_DMA
If NO_DMA=y:

drivers/built-in.o: In function `uio_dmem_genirq_release':
drivers/uio/uio_dmem_genirq.c:95: undefined reference to `dma_free_coherent'
drivers/built-in.o: In function `uio_dmem_genirq_open':
drivers/uio/uio_dmem_genirq.c:61: undefined reference to `dma_alloc_coherent'

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Hans J. Koch <hjk@hansjkoch.de>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-05-21 10:13:23 -07:00
Peter Huewe ced9017a4f uio/uio_cif: Use module_pci_driver to register driver
Removing some boilerplate by using module_pci_driver instead of calling
register and unregister in the otherwise empty init/exit functions.

Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-05-21 10:10:41 -07:00
Peter Huewe b59f9a0533 uio/uio_netx: Use module_pci_driver to register driver
Removing some boilerplate by using module_pci_driver instead of calling
register and unregister in the otherwise empty init/exit functions.

Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-05-21 10:10:41 -07:00
Peter Huewe 8bcaec4ee2 uio/uio_sercos3: Use module_pci_driver to register driver
Removing some boilerplate by using module_pci_driver instead of calling
register and unregister in the otherwise empty init/exit functions.

Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-05-21 10:10:41 -07:00
Peter Huewe aa8c06f7c9 uio/uio_aec: Use module_pci_driver to register driver
Removing some boilerplate by using module_pci_driver instead of calling
register and unregister in the otherwise empty init/exit functions.

Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-05-21 10:10:41 -07:00
Damian Hobson-Garcia 5ed0505c71 drivers: uio: Fix UIO device registration failure
Until recently uio_get_minor() returned 0 for success and
a negative value on failure.  This became non-negative for suceess and
negative for failure.  Restore the original return value spec so that we can
successfully initialize UIO devices with a non-zero minor device
number.

Cc: "Hans J. Koch" <hjk@hansjkoch.de>
Signed-off-by: Damian Hobson-Garcia <dhobsong@igel.co.jp>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-03-29 09:08:22 -07:00
Tejun Heo 6d77093129 uio: convert to idr_alloc()
Convert to the much saner new idr interface.

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: "Hans J. Koch" <hjk@hansjkoch.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-27 19:10:19 -08:00
Heiko Carstens c423c8ffa7 uio: remove !S390 dependency from Kconfig
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2013-02-14 15:55:18 +01:00
Linus Torvalds d027db132b ARM: arm-soc: SoC updates for 3.8
This contains the bulk of new SoC development for this merge window.
 
 Two new platforms have been added, the sunxi platforms (Allwinner A1x
 SoCs) by Maxime Ripard, and a generic Broadcom platform for a new
 series of ARMv7 platforms from them, where the hope is that we can
 keep the platform code generic enough to have them all share one mach
 directory. The new Broadcom platform is contributed by Christian Daudt.
 
 Highbank has grown support for Calxeda's next generation of hardware,
 ECX-2000.
 
 clps711x has seen a lot of cleanup from Alexander Shiyan, and he's also
 taken on maintainership of the platform.
 
 Beyond this there has been a bunch of work from a number of people on
 converting more platforms to IRQ domains, pinctrl conversion, cleanup
 and general feature enablement across most of the active platforms.
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Merge tag 'soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC updates from Olof Johansson:
 "This contains the bulk of new SoC development for this merge window.

  Two new platforms have been added, the sunxi platforms (Allwinner A1x
  SoCs) by Maxime Ripard, and a generic Broadcom platform for a new
  series of ARMv7 platforms from them, where the hope is that we can
  keep the platform code generic enough to have them all share one mach
  directory.  The new Broadcom platform is contributed by Christian
  Daudt.

  Highbank has grown support for Calxeda's next generation of hardware,
  ECX-2000.

  clps711x has seen a lot of cleanup from Alexander Shiyan, and he's
  also taken on maintainership of the platform.

  Beyond this there has been a bunch of work from a number of people on
  converting more platforms to IRQ domains, pinctrl conversion, cleanup
  and general feature enablement across most of the active platforms."

Fix up trivial conflicts as per Olof.

* tag 'soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (174 commits)
  mfd: vexpress-sysreg: Remove LEDs code
  irqchip: irq-sunxi: Add terminating entry for sunxi_irq_dt_ids
  clocksource: sunxi_timer: Add terminating entry for sunxi_timer_dt_ids
  irq: versatile: delete dangling variable
  ARM: sunxi: add missing include for mdelay()
  ARM: EXYNOS: Avoid early use of of_machine_is_compatible()
  ARM: dts: add node for PL330 MDMA1 controller for exynos4
  ARM: EXYNOS: Add support for secondary CPU bring-up on Exynos4412
  ARM: EXYNOS: add UART3 to DEBUG_LL ports
  ARM: S3C24XX: Add clkdev entry for camif-upll clock
  ARM: SAMSUNG: Add s3c24xx/s3c64xx CAMIF GPIO setup helpers
  ARM: sunxi: Add missing sun4i.dtsi file
  pinctrl: samsung: Do not initialise statics to 0
  ARM i.MX6: remove gate_mask from pllv3
  ARM i.MX6: Fix ethernet PLL clocks
  ARM i.MX6: rename PLLs according to datasheet
  ARM i.MX6: Add pwm support
  ARM i.MX51: Add pwm support
  ARM i.MX53: Add pwm support
  ARM: mx5: Replace clk_register_clkdev with clock DT lookup
  ...
2012-12-12 12:05:15 -08:00
Damian Hobson-Garcia d5185c4eb3 drivers: uio: Only allocate new private data when probing device tree node
The same condition should be used both when allocating and freeing the
driver private data.  When dev.of_node is non NULL, allocate a new
private data structure, otherwise use the values from the platform data.

Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Damian Hobson-Garcia <dhobsong@igel.co.jp>
Cc: "Hans J. Koch" <hjk@hansjkoch.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-11-21 13:44:10 -08:00
Damian Hobson-Garcia 439926c81c drivers: uio_dmem_genirq: Allow partial success when opening device
The uio device should not fail on open just because one memory allocation
fails. The device might export several regions, the failure of some of
which may or may not be a problem for the user space driver.  Failing
regions will remain unmapped, and successful regions will be mapped and
exported to user space.  Also deals with the case where failing to map
a region after successfully allocating others would not unmap the
successfully allocated regions before dying.

Signed-off-by: Damian Hobson-Garcia <dhobsong@igel.co.jp>
Cc: "Hans J. Koch" <hjk@hansjkoch.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-11-21 13:44:10 -08:00
Damian Hobson-Garcia 87c4d1a7dc drivers: uio_dmem_genirq: Don't use DMA_ERROR_CODE to indicate unmapped regions
DMA_ERROR_CODE is not defined on all architectures and is architecture
specific.  Instead, use the constant, ~0 to indicate unmapped regions.

Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Damian Hobson-Garcia <dhobsong@igel.co.jp>
Cc: "Hans J. Koch" <hjk@hansjkoch.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-11-21 13:44:10 -08:00