The i810 and i830 device drivers may replace their file operations
on an open file descriptor. My previous patch to move the BKL
out of the common DRM code into these drivers only caught the
default file operations, not the ones that actually end up being
used.
Found while trying to come up with a way to kill the BKL for
good in these drivers.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Just reschedule the retire requests again if the device is currently
busy. The request list will be pruned along other paths so will never
grow unbounded and so we can afford to miss the occasional pruning.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This check only appears to succeed when using GMBUS, so we need to skip
it if we have fallen back to using GPIO bit banging.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
There are several reported instances of GMBUS failing to successfully
read the EDID, so revert back to bit banging until the issue is
resolved.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=30371
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Besides a couple of bugs when writing more than a single byte along the
GMBUS, SDVO was completely failing whilst trying to use GMBUS, so use
bit banging instead.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
With multiple rings generating requests independently, the outstanding
requests must also be track independently.
Reported-by: Wang Jinjin <jinjin.wang@intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=30380
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Board has no digital connectors
Reported-by: Andy Walls <awalls@md.metrocast.net>
Tested-by: Andy Walls <awalls@md.metrocast.net>
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
Hook the GEM vm open/close ops into the generic drm vm open/close so
that the private vma entries are created and destroy appropriately.
Fixes the leak of the drm_vma_entries during the lifetime of the filp.
Reported-by: Matt Mackall <mpm@selenic.com>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
The IPS driver needs to know the current power consumption of the GMCH
in order to make decisions about when to increase or decrease the CPU
and/or GPU power envelope. So fix up the divisions to save the results
so the numbers are actually correct (contrary to some earlier comments
and code, these functions do not modify the first argument and use it
for the result).
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: stable@kernel.org
encoder info was not printed properly on boards using the
DFP6 id.
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
Introduced by 48b956c5, I had thought I had already fixed this. Oh well.
Reported-by: Sitsofe Wheeler <sitsofe@yahoo.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Daniel Vetter pointed out that in this case is would be clearer and
cleaner to use a spinlock instead of a mutex to protect the per-file
request list manipulation. Make it so.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
I've accidently killed a little bit too much in
commit 1da3f87ebb
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Mon Aug 23 22:53:24 2010 +0200
drm: kill kernel_context_switch callbacks
Note to self: Next time also test with AIGLX disabled.
Reported-and-Tested-by: Andy Furniss <lists@andyfurniss.entadsl.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=30374
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
rdusp() gives us the right value only for the current thread...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
We want interrupts disabled on all paths leading to RESTORE_ALL;
otherwise, we are risking an IRQ coming between the updates of
alpha_mv->hae_cache and *alpha_mv->hae_register and set_hae()
within the IRQ getting badly confused.
RESTORE_ALL used to play with disabling IRQ itself, but that got
removed back in 2002, without making sure we had them disabled
on all paths. It's cheaper to make sure we have them disabled than
to revert to original variant...
Remove the detritus left from that commit back in 2002; we used to
need a reload of $0 and $1 since swpipl would change those, but
doing that had become pointless when we stopped doing swpipl in
there...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Thomas Pollet noticed that the remap_file_pages() system call in
fremap.c has a potential overflow in the first part of the if statement
below, which could cause it to process bogus input parameters.
Specifically the pgoff + size parameters could be wrap thereby
preventing the system call from failing when it should.
Reported-by: Thomas Pollet <thomas.pollet@gmail.com>
Signed-off-by: Larry Woodman <lwoodman@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The SNDRV_HDSP_IOCTL_GET_CONFIG_INFO and
SNDRV_HDSP_IOCTL_GET_CONFIG_INFO ioctls in hdspm.c and hdsp.c allow
unprivileged users to read uninitialized kernel stack memory, because
several fields of the hdsp{m}_config_info structs declared on the stack
are not altered or zeroed before being copied back to the user. This
patch takes care of it.
Signed-off-by: Dan Rosenberg <dan.j.rosenberg@gmail.com>
Cc: <stable@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
It's the same code, essentially, so kill all copies safe one unified
version.
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
All functions are extremely similar, so fold them into one generic
implementation.
This function isn't used anyway, because there's not yet a bsd ring
error state dumper.
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Two macros that use a base address for HWS_PGA were missing, add them.
Also switch the remaining users of *_ACTHD to the ring-base one.
Kill the other ring-specific macros because they're now unused.
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
[ickle: And silence checkpatch whilst in the vicinity]
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This was mixed up in the following patch:
commit a6c45cf013
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date: Fri Sep 17 00:32:17 2010 +0100
drm/i915: INTEL_INFO->gen supercedes i8xx, i9xx, i965g
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Everything is now handled in intel-gtt.h so these defines
are only confusing.
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Owain Ainsworth reported an issue between the interaction of the
hangcheck and userspace immediately (and permanently) falling back to
s/w rasterisation. In order to break the mutex and begin resetting the
GPU, we must abort the current operation (usually within the wait) and
climb sufficiently far back up the call chain to drop the mutex. In his
implementation, Owain has a loop within the ioctl handler to detect the
hang and then sleep until the error handler has run. I've chosen to
return to userspace and report an EAGAIN which should trigger the
userspace ioctl handler to repeat the call (simply because it felt less
invasive...). Before hitting a wedged GPU, we then wait upon completion
of the error handler.
Reported-by: Owain G. Ainsworth <zerooa@googlemail.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Add logic to prevent two I/O requests being merged if
only one of them is a discard. Ditto secure discard.
Without this fix, it is possible for write requests
to transform into discard requests. For example:
Submit bio 1 to discard 8 sectors from sector n
Submit bio 2 to write 8 sectors from sector n + 16
Submit bio 3 to write 8 sectors from sector n + 8
Bio 1 becomes request 1. Bio 2 becomes request 2.
Bio 3 is merged with request 2, and then subsequently
request 2 is merged with request 1 resulting in just
one I/O request which discards all 24 sectors.
Signed-off-by: Adrian Hunter <adrian.hunter@nokia.com>
(Moved the checks above the position checks /Jens)
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
* 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/staging:
x86/hwmon: pkgtemp has no dependency on PCI
MAINTAINERS: Update hwmon entry
x86/hwmon: register alternate sibling upon CPU removal
x86/hwmon: fix initialization of pkgtemp
x86/hwmon: fix initialization of coretemp
x86/hwmon: don't leak device attribute file from pkgtemp_probe() and pkgtemp_remove()
x86/hwmon: avoid deadlock on CPU removal in pkgtemp
x86/hwmon: fix module init for hotplug-but-no-device-found case
hwmon: (lis3) Fix Oops with NULL platform data
This "bpt_code" instruction was killed off in our development line a while
ago (the actual definition of bpt_code that is used is in kernel/traps.c)
but I didn't push it for 2.6.36 because it seemed harmless and I didn't
want to try to push more than absolutely necessary.
However, we recently fixed a bug in our gcc that had been causing
"-gdwarf2" not to be passed to the assembler, and passing this flag causes
an erroneous assembler failure in the presence of code in a data section,
sometimes. While we'd like to track down the bug in the assembler,
we'd also like to make sure 2.6.36 builds with the current toolchain,
so I'm removing this dead code as well.
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Thomas Pollet points out that the 'end' variable is broken. It was
computed based on start/size before they were page-aligned, and as such
doesn't actually match any of the other actions we take. The overflow
test on end was also redundant, since we had already tested it with the
properly aligned version.
So just get rid of it entirely. The one remaining use for that broken
variable can just use 'start+size' like all the other cases already did.
Reported-by: Thomas Pollet <thomas.pollet@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jlbec/ocfs2:
o2dlm: force free mles during dlm exit
ocfs2: Sync inode flags with ext2.
ocfs2: Move 'wanted' into parens of ocfs2_resmap_resv_bits.
ocfs2: Use cpu_to_le16 for e_leaf_clusters in ocfs2_bg_discontig_add_extent.
ocfs2: update ctime when changing the file's permission by setfacl
ocfs2/net: fix uninitialized ret in o2net_send_message_vec()
Ocfs2: Handle empty list in lockres_seq_start() for dlmdebug.c
Ocfs2: Re-access the journal after ocfs2_insert_extent() in dxdir codes.
ocfs2: Fix lockdep warning in reflink.
ocfs2/lockdep: Move ip_xattr_sem out of ocfs2_xattr_get_nolock.
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6:
USB: update Kconfig help text for CONFIG_USB_SUSPEND
usb: musb: gadget: restart request on clearing endpoint halt
usb: musb: host: Issue a memory barrier before starting DMA
usb: musb: gadget: fix dma length in txstate
usb: musb: gadget: complete request only if data is transfered over
usb: musb: gadget: fix DMA length for OUT transfer
usb: musb: gadget: enable autoclear for OUT transfer in both DMA 0 and DMA 1
usb: musb: gadget: fix bulk IN infinit hangs in double buffer case
usb: musb: gadget: fix kernel panic if using out ep with FIFO_TXRX style
USB: fix bug in initialization of interface minor numbers
* 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6:
vgaarb: trivial fix
drm: radeon cleanup fixes...
drm: fix trivial coding errors
drm: ttm sparse fixes.
drm/nouveau: fix panels using straps-based mode detection
drm/ttm: Clear the ghost cpu_writers flag on ttm_buffer_object_transfer.
drm/radeon: don't allow device to be opened if powered down
It's a userland pointer; worse, an untrustable one since ptrace
has just provided a chance to modify it.
X-Roothole-Covering-Cabal: TINRCC
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Arnd Bergmann