Commit graph

319151 commits

Author SHA1 Message Date
Chris Mason
b478b2baa3 Merge branch 'qgroup' of git://git.jan-o-sch.net/btrfs-unstable into for-linus
Conflicts:
	fs/btrfs/ioctl.c
	fs/btrfs/ioctl.h
	fs/btrfs/transaction.c
	fs/btrfs/transaction.h

Signed-off-by: Chris Mason <chris.mason@fusionio.com>
2012-07-25 16:11:38 -04:00
Stephen Warren
a6a3dd1aed ARM: dt: tegra trimslice: enable USB2 port
This was accidentally disabled by commit 2a5fdc9 "ARM: dt: tegra:
invert status=disable vs status=okay".

Cc: <stable@vger.kernel.org> # v3.5 (file is named tegra-trimslice.dts there)
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-07-25 22:09:16 +02:00
Stephen Warren
01ad8063a5 ARM: dt: tegra trimslice: add vbus-gpio property
On TrimSlice, Tegra's USB1 port may be routed to either an external micro
USB port, or an internal USB->SATA bridge for SSD or HDD. This muxing is
controlled by a GPIO. Whilst not strictly a VBUS GPIO, the TrimSlice
board files caused this GPIO to be set appropriately to enable the SATA
bridge by passing it as the VBUS GPIO to the USB driver. Echo this same
configuration in device tree to enable the SATA bridge.

An alternative might be to implement a full USB bus mux driver. However,
that seems over-complex right now.

Cc: <stable@vger.kernel.org> # v3.5 (file is named tegra-trimslice.dts there)
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-07-25 22:09:16 +02:00
Jeff Garzik
641589bff7 [libata] pata_cmd64x: whitespace cleanup
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2012-07-25 16:07:40 -04:00
Tony Prisk
04529fe2a2 ARM: vt8500: Add maintainer for VT8500 architecture
Add a MAINTAINERS entry for mach-vt8500 and related files.

Signed-off-by: Tony Prisk <linux@prisktech.co.nz>
Acked-by: Alexey Charkov <alchark@gmail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-07-25 22:04:24 +02:00
Stephen Rothwell
354b2eac38 libata-acpi: fix up for acpi_pm_device_sleep_state API
After merging the libata tree, today's [2012-07-01] linux-next build (x86_64
allmodconfig) failed like this:

drivers/ata/libata-acpi.c: In function 'ata_acpi_set_state':
drivers/ata/libata-acpi.c:872:5: error: too few arguments to function 'acpi_pm_device_sleep_state'
include/acpi/acpi_bus.h:418:5: note: declared here

Caused by commit 3bd46600a7 ("libata-acpi: add ata port runtime D3Cold
support") from the libata tree interacting with commit ee85f54371
("ACPI/PM: specify lowest allowed state for device sleep state") from the
pci tree.

This patch adds ACPI_STATE_D3 as the new third parameter to
acpi_pm_device_sleep_state()

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2012-07-25 16:02:19 -04:00
Jeff Garzik
8407884dd9 Merge branch 'master' [vanilla Linus master] into libata-dev.git/upstream
Two bits were appended to the end of the bitfield
list in struct scsi_device.  Resolve that conflict
by including both bits.

Conflicts:
	include/scsi/scsi_device.h
2012-07-25 15:58:48 -04:00
Thang Q. Nguyen
dc7f71f486 sata_dwc_460ex: device tree may specify dma_channel
Only channel 0 is currently support and the driver code is fixed on
channel 0. This patch lets device node specifying dma-channel in case
it is not 0. If no dma-channel property is specified, channel 0 is
used as default.

Signed-off-by: Thang Q. Nguyen <tqnguyen@apm.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2012-07-25 15:54:21 -04:00
Jeff Layton
764a1b1ace cifs: ensure that we always do cifsFileInfo_get under the spinlock
The readpages bug is a regression that was introduced in 6993f74a5.
This also fixes a couple of similar bugs in the uncached read and write
codepaths.

Also, prevent this sort of thing in the future by having cifsFileInfo_get
take the spinlock itself, and adding a _locked variant for use in places
that are already holding the lock. The _put code has always done that
so this makes for a less confusing interface.

Cc: <stable@vger.kernel.org> # 3.5.x
Reviewed-by: Pavel Shilovsky <pshilovsky@samba.org>
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-25 14:51:30 -05:00
Jeffrin Jose
facb8fa6c7 ahci, trivial: fixed coding style issues related to braces
Fixed coding style issues related to braces found
by checkpatch.pl in drivers/ata/ahci.c

Signed-off-by: Jeffrin Jose <ahiliation@yahoo.co.in>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2012-07-25 15:50:20 -04:00
Arnd Bergmann
c1f9c4227c Merge branch 'v3.5-rc7-fixes' of git://github.com/lunn/linux into fixes
From Andrew Lunn <andrew@lunn.ch>:

* 'v3.5-rc7-fixes' of git://github.com/lunn/linux:
  ARM: Kirkwood: Replace mrvl with marvell
  ARM: Orion: fix driver probe error handling with respect to clk
  ARM: Dove: Fixup ge00 initialisation
  ARM: Kirkwood: Fix PHY disable clk problems
  ARM: Kirkwood: Ensure runit clock always ticks.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-07-25 21:37:09 +02:00
Shiraz Hashim
18c25ff457 ahci_platform: add hibernation callbacks
Use existing suspend, resume implementation for hibernation callbacks.

Signed-off-by: Shiraz Hashim <shiraz.hashim@st.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2012-07-25 15:31:08 -04:00
H Hartley Sweeten
604284071a libata-eh.c: local functions should not be exposed globally
The function ata_ering_clear_cb is only referenced in this file and
should be marked static to prevent it from being exposed globally.

This quiets the sparse warning:

warning: symbol 'ata_ering_clear_cb' was not declared. Should it be static?

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2012-07-25 15:17:32 -04:00
H Hartley Sweeten
b0e73af78a libata-transport.c: local functions should not be exposed globally
Functions not referenced outside of a source file should be marked
static to prevent it from being exposed globally.

This quiets the sparse warnings:

warning: symbol 'ata_is_port' was not declared. Should it be static?
warning: symbol 'ata_is_link' was not declared. Should it be static?
warning: symbol 'ata_is_ata_dev' was not declared. Should it be static?

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2012-07-25 15:14:55 -04:00
Thang Q. Nguyen
3a8b788f61 sata_dwc_460ex: support hardreset
The hardreset operation is currently not supported. This causes
sometime the SATA driver does cause kernel crash because of
none-determined state.a This patch will fix the issue.

Signed-off-by: Thang Q. Nguyen <tqnguyen@apm.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2012-07-25 15:13:53 -04:00
Axel Lin
2fc75da0c5 ata: use module_pci_driver
This patch converts the drivers in drivers/ata/* to use module_pci_driver()
macro which makes the code smaller and a bit simpler.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Cc: Alan Cox <alan@linux.intel.com>
Cc: Jeff Garzik <jgarzik@pobox.com>
Cc: Mikael Pettersson <mikpe@it.uu.se>
Cc: Mark Lord <kernel@teksavvy.com>
Cc: Jeremy Higdon <jeremy@sgi.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2012-07-25 15:12:11 -04:00
Julia Lawall
b08f5bc404 drivers/ata/pata_pcmcia.c: adjust suspicious bit operation
IO_DATA_PATH_WIDTH_8 is 0, so a bit-and with it is always false.  The
value IO_DATA_PATH_WIDTH covers the bits of the IO_DATA_PATH constants, so
first pick those bits and then make the test using !=.

This problem was found using Coccinelle (http://coccinelle.lip6.fr/).

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2012-07-25 15:06:20 -04:00
Fabio Estevam
a18dada08e pata_imx: Convert to clk_prepare_enable/clk_disable_unprepare
With the new i.mx clock framework, we need to use
clk_prepare_enable/clk_disable_unprepare.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2012-07-25 15:05:43 -04:00
Mark Nelson
ff0173c1a3 ahci: Enable SB600 64bit DMA on MSI K9AGM2 (MS-7327) v2
Like e65cc194f7 (ahci: Enable SB600 64bit
DMA on MSI K9A2 Platinum) and 3c4aa91f21
(ahci: Enable SB600 64bit DMA on Asus M3A), this patch enables 64bit DMA
for the AHCI SATA controller of another board that has the SB600
southbridge.

In this case though we're enabling 64bit DMA for another MSI motherboard,
the K9AGM2 or MS-7327. It is new enough that all of the BIOS releases
since the initial release (1.0 from 2007-02-09) work correctly with 64bit
DMA enabled.

Signed-off-by: Mark Nelson <mdnelson8@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2012-07-25 14:39:35 -04:00
Daniel J Blueman
c531077f40 [libata] Prevent interface errors with Seagate FreeAgent GoFlex
When using my Seagate FreeAgent GoFlex eSATAp external disk enclosure,
interface errors are always seen until 1.5Gbps is negotiated [1]. This
occurs using any disk in the enclosure, and when the disk is connected
directly with a generic passive eSATAp cable, we see stable 3Gbps
operation as expected.

Blacklist 3Gbps mode to avoid dataloss and the ~30s delay bus reset
and renegotiation incurs.

Signed-off-by: Daniel J Blueman <daniel@quora.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2012-07-25 14:34:42 -04:00
Jeff Garzik
91e4d5a1d7 drivers/acpi/glue: revert accidental license-related 6b66d95895 bits
Commit 6b66d95895 should not have changed
EXPORT_SYMBOL_GPL to EXPORT_SYMBOL.

Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2012-07-25 14:24:13 -04:00
Lin Ming
e91df93ebd libata-acpi: add missing inlines in libata.h
Adds inline for ata_acpi_unregister/ata_acpi_bind/ata_acpi_unbind
in drivers/ata/libata.h for !CONFIG_ATA_ACPI to fix below warnings.

warning: 'ata_acpi_unregister' defined but not used [-Wunused-function]
warning: 'ata_acpi_bind' defined but not used [-Wunused-function]
warning: 'ata_acpi_unbind' defined but not used [-Wunused-function]

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2012-07-25 14:15:03 -04:00
Arne Jansen
e679376911 Btrfs: add helper for tree enumeration
Often no exact match is wanted but just the next lower or
higher item. There's a lot of duplicated code throughout
btrfs to deal with the corner cases. This patch adds a
helper function that can facilitate searching.

Signed-off-by: Arne Jansen <sensille@gmx.net>
2012-07-25 17:33:18 +02:00
David Sterba
362a20c5e2 btrfs: allow cross-subvolume file clone
Lift the EXDEV condition and allow different root trees for files being
cloned, then pass source inode's root when searching for extents.
Cloning is not allowed to cross vfsmounts, ie. when two subvolumes from
one filesystem are mounted separately.

Signed-off-by: David Sterba <dsterba@suse.cz>
2012-07-25 17:33:09 +02:00
Andrew Lunn
778435045a ARM: Kirkwood: Replace mrvl with marvell
It has been decided to use marvell, not mrvl, in the compatibility
property. Search & replace.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
2012-07-25 17:06:23 +02:00
Simon Baatz
baffab28b1 ARM: Orion: fix driver probe error handling with respect to clk
The clk patches added code to get and enable clocks in the
respective driver probe functions.  If the probe function failed
for some reason after enabling the clock, the clock was not
disabled again in many cases.

Signed-off-by: Simon Baatz <gmbnomis@gmail.com>
Signed-off-by: Andrew Lumm <andrew@lunn.ch>
2012-07-25 17:06:21 +02:00
Hannes Reinecke
30e0f58035 ARM: Dove: Fixup ge00 initialisation
The last argument of orion_ge00_init() is actually the error
interrupt, so we should be using the correct value here.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
2012-07-25 17:05:55 +02:00
Simon Baatz
b5409430ff ARM: Kirkwood: Fix PHY disable clk problems
Commit 98d9986 (ARM: Kirkwood: Replace clock gating) and the fix 5fb2ce
(ARM: Kirkwood: clk_register_gate_fn: add fn assignment) introduced a custom
variant of clock gating which allows to define a function to be called
before gating the clock off.

This is used to disable the SATA and PCIe PHYs if the respective clocks
are unused after initialization.

However, of these two drivers, the SATA driver may be compiled as a module.
The driver re-enables the clocks at module init but the PHYs stay disabled.

Since the custom clock gating disabled the PHYs when gating the clock off,
it should also re-enable them when enabling the clock gate.  This is done by
adding a second function that may be used to enable the PHYs.

Signed-off-by: Simon Baatz <gmbnomis@gmail.com>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
2012-07-25 16:51:10 +02:00
Andrew Lunn
f479db44d2 ARM: Kirkwood: Ensure runit clock always ticks.
Marvell engineers tell us:

	It seems that many units use the RUNIT clock.
	SPI, UART, NAND, TWSI, ...
	So it's not possible to clock gate it.

Currently the SPI, NAND and TWSI driver will clk_prepaure_enable()
this clk, but since we have no idea what ... is, and turning this clk
off results in a hard lock, unconditionally enable runit.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Simon Baatz <gmbnomis@gmail.com>
2012-07-25 16:50:45 +02:00
Pawel Moll
49121304a9 ARM: versatile: Don't use platform clock for Integrator & VE
Due to automatic merge of a613163dff
"ARM: integrator: convert to common clock" and
56a34b03ff "ARM: versatile: Make
plat-versatile clock optional" two platforms: Integrator and
Versatile Express now select both COMMON_CLK and
PLAT_VERSATILE_CLOCK which breaks building them. Fixed now.

Signed-off-by: Pawel Moll <pawel.moll@arm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-07-25 14:37:57 +02:00
Arnd Bergmann
8cef081c71 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux into fixes
The merge of the 'clk-for-linus' branch caused an automated
merge failure. Pull that in here so we can fix the problem.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-07-25 14:35:04 +02:00
Daniel Vetter
e8aeaee7b0 drm/i915: unbreak lastclose for failed driver init
We now refuse to load on gen6+ if kms is not enabled:

commit 26394d9251
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Mon Mar 26 21:33:18 2012 +0200

    drm/i915: refuse to load on gen6+ without kms

Which results in the drm core calling our lastclose function to clean
up the mess, but that one is neatly broken for such failure cases
since kms has been introduced in

commit 79e539453b
Author: Jesse Barnes <jbarnes@virtuousgeek.org>
Date:   Fri Nov 7 14:24:08 2008 -0800

    DRM: i915: add mode setting support

Reported-and-tested-by: Paulo Zanoni <przanoni@gmail.com>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2012-07-25 10:40:00 +02:00
Eric Anholt
0da5cec1de drm/i915: Set the context before setting up regs for the context.
Fixes failures in transform feedback on gen7 because our SOL_RESET
flag was setting the transform feedback offsets in the old context
(occasionally happened to be ours) instead of the new context.

Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2012-07-25 10:39:59 +02:00
Daniel Vetter
35313cde4c drm/i915: constify mode in crtc_mode_fixup
Laurent Pinchart missed this when sending in is giant constify patch:

commit e811f5ae19
Author: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Date:   Tue Jul 17 17:56:50 2012 +0200

    drm: Make the .mode_fixup() operations mode argument a const pointer

Acked-by; Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2012-07-25 10:39:59 +02:00
Daniel Vetter
520c41cf2f drm/i915/lvds: ditch ->prepare special case
LVDS is the first output where dpms on/off and prepare/commit don't
perfectly match. Now the idea behind this special case seems to be
that for simple resolution changes on the LVDS we don't need to stop
the pipe, because (at least on newer chips) we can adjust the panel
fitter on the fly.

There are a few problems with the current code though:
- We still stop and restart the pipe unconditionally, because the crtc
  helper code isn't flexible enough.
- We show some ugly flickering, especially when changing crtcs (this
  the crtc helper would actually take into account, but we don't
  implement the encoder->get_crtc callback required to make this work
  properly).

So it doesn't even work as advertised. I agree that it would be nice
to do resolution changes on LVDS (and also eDP) whithout blacking the
screen where the panel fitter allows to do that. But imo we should
implement this as a special case a few layers up in the mode set code,
akin to how we already detect simple framebuffer changes (and only
update the required registers with ->mode_set_base).

Until this is all in place, make our lives easier and just rip it out.

Also note that this seems to fix actual bugs with enabling the lvds
output, see:

http://lists.freedesktop.org/archives/intel-gfx/2012-July/018614.html

Cc: Takashi Iwai <tiwai@suse.de>
Cc: Giacomo Comes <comes@naic.edu>
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Tested-by: Takashi Iwai <tiwai@suse.de>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2012-07-25 10:39:59 +02:00
Dan Carpenter
be636387f8 drm/i915: dereferencing an error pointer
We need to check that "ctx" is a valid pointer before dereferencing it.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2012-07-25 10:39:58 +02:00
Chris Wilson
b259b31206 drm/i915: fix invalid reference handling of the default ctx obj
Otherwise we end up trying to unpin a freed object and BUG.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2012-07-25 10:39:58 +02:00
Chris Wilson
eeef9b3874 drm/i915: Add -EIO to the list of known errors for __wait_seqno
This prevents a WARN introduced with

  commit de2b998552
  Author: Daniel Vetter <daniel.vetter@ffwll.ch>
  Date:   Wed Jul 4 22:52:50 2012 +0200

      drm/i915: don't return a spurious -EIO from intel_ring_begin

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2012-07-25 10:39:57 +02:00
Chris Wilson
d3373a241b drm/i915: Flush the context object from the CPU caches upon switching
The issue is that we stale data in the CPU caches, when we come to
swap-out the object, the CPU may short-circuit the reads from those
cacheline and so corrupt the context object.

Secondary, leaving the context object as being marked in the CPU write
domain whilst on the GPU active list is a bad idea and will throw
warnings later.

Note: Thanks to calling set_to_gtt_domain with write = false and not
setting any gpu write domain when putting a context object onto the
active list (when we switch away from it) the set_to_gtt_domain call
won't block.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
[danvet: Added a note to the commit message and a comment in the code
to explain the clever non-blocking trick.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2012-07-25 10:39:57 +02:00
Dmitry Torokhov
314820c9e8 Merge branch 'next' into for-linus 2012-07-24 22:43:04 -07:00
Jerome Glisse
fcedac670c drm/radeon: fix dpms on/off on trinity/aruba v2
The external encoder need to be setup again before enabling the
transmiter. This seems to be only needed on some trinity/aruba
to fix dpms on.

v2: Add comment, only setup again on dce6 ie aruba or newer.

Cc: <stable@kernel.org>
Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-07-25 14:16:28 +10:00
Jerome Glisse
ca2ccde5e2 drm/radeon: on hotplug force link training to happen (v2)
To have DP behave like VGA/DVI we need to retrain the link
on hotplug. For this to happen we need to force link
training to happen by setting connector dpms to off
before asking it turning it on again.

v2: agd5f
- drop the dp_get_link_status() change in atombios_dp.c
  for now.  We still need the dpms OFF change.

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-07-25 14:14:12 +10:00
Jerome Glisse
266dcba541 drm/radeon: fix hotplug of DP to DVI|HDMI passive adapters (v2)
No need to retrain the link for passive adapters.

v2: agd5f
- no passive DP to VGA adapters, update comments
- assign radeon_connector_atom_dig after we are sure
  we have a digital connector as analog connectors
  have different private data.
- get new sink type before checking for retrain.  No
  need to check if it's no longer a DP connection.

Cc: <stable@vger.kernel.org>
Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-07-25 14:14:07 +10:00
Jerome Glisse
8d1c702aa0 drm/radeon: fix non revealent error message
We want to print link status query failed only if it's
an unexepected fail. If we query to see if we need
link training it might be because there is nothing
connected and thus link status query have the right
to fail in that case.

To avoid printing failure when it's expected, move the
failure message to proper place.

Cc: stable@vger.kernel.org
Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-07-25 14:13:05 +10:00
Dan Carpenter
1e179d4e28 drm/radeon: check for allocation failure in radeon_ring_backup()
Static checkers complain if this we don't check for allocation failure.
Also we can use the new kmalloc_array() function here as a cleanup.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-07-25 14:12:17 +10:00
Jerome Glisse
d1c7871ddb drm/radeon: fix bo creation retry path
Retry label was at wrong place in function leading to memory
leak.

Cc: <stable@vger.kernel.org>
Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-07-25 14:11:01 +10:00
Ilija Hadzic
949c4a34af drm: track dev_mapping in more robust and flexible way
Setting dev_mapping (pointer to the address_space structure
used for memory mappings) to the address_space of the first
opener's inode and then failing if other openers come in
through a different inode has a few restrictions that are
eliminated by this patch.

If we already have valid dev_mapping and we spot an opener
with different i_node, we force its i_mapping pointer to the
already established address_space structure (first opener's
inode). This will make all mappings from drm device hang off
the same address_space object.

Some benefits (things that now work and didn't work
before) of this patch are:

 * user space can mknod and use any number of device
   nodes and they will all work fine as long as the major
   device number is that of the drm module.
 * user space can even remove the first opener's device
   nodes and mknod the new one and the applications and
   windowing system will still work.
 * GPU drivers can safely assume that dev->dev_mapping is
   correct address_space and just blindly copy it
   into their (private) bdev.dev_mapping

For reference, some discussion that lead to this patch can
be found here:

http://lists.freedesktop.org/archives/dri-devel/2012-April/022283.html

Signed-off-by: Ilija Hadzic <ihadzic@research.bell-labs.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-07-25 14:09:30 +10:00
Zhang Rui
8eaa8d6ca2 Thermal: Documentation update
With commit 6503e5df08,
the value of /sys/class/thermal/thermal_zoneX/mode has been changed
from user/kernel to enabled/disabled.
Update the documentation so that users won't be confused.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2012-07-24 23:20:40 -04:00
Durgadoss R
27365a6c7d Thermal: Add Hysteresis attributes
The Linux Thermal Framework does not support hysteresis
attributes. Most thermal sensors, today, have a
hysteresis value associated with trip points.

This patch adds hysteresis attributes on a per-trip-point
basis, to the Thermal Framework. These attributes are
optionally writable.

Signed-off-by: Durgadoss R <durgadoss.r@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2012-07-24 23:19:26 -04:00
Durgadoss R
c56f5c0342 Thermal: Make Thermal trip points writeable
Some of the thermal drivers using the Generic Thermal Framework
require (all/some) trip points to be writeable. This patch makes
the trip point temperatures writeable on a per-trip point basis,
and modifies the required function call in thermal.c. This patch
also updates the Documentation to reflect the new change.

Signed-off-by: Durgadoss R <durgadoss.r@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2012-07-24 23:17:20 -04:00