Tejun Heo [Wed, 26 Jan 2011 16:49:18 +0000 (17:49 +0100)]
drm/nouveau: use system_wq instead of dev_priv->wq
With cmwq, there's no reason for nouveau to use a dedicated workqueue.
Drop dev_priv->wq and use system_wq instead. Each work item is sync
flushed when the containing structure is unregistered/destroyed.
Note that this change also makes sure that nv50_gpio_handler is not
freed while the contained work item is still running.
Signed-off-by: Tejun Heo <tj@kernel.org> Cc: David Airlie <airlied@linux.ie> Cc: dri-devel@lists.freedesktop.org Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Ben Skeggs [Wed, 2 Feb 2011 04:57:05 +0000 (14:57 +1000)]
drm/nv50: drop explicit yields in favour of smaller PFIFO timeslice
This gives a small, but noticeable performance gain at lower performance
levels, and unchanged at the higher ones.
With this commit, we're now using the same timeslice size as the NVIDIA
binary driver currently does, and dropping an unknown bit that NVIDIA
no longer appear to set.
Ben Skeggs [Wed, 2 Feb 2011 03:21:57 +0000 (13:21 +1000)]
drm/nv84: use vm offsets for semaphores
We may well be making more use of semaphores in the future, having the
entire VM available makes requiring DMA objects for each and every
semaphore block unnecessary.
Dave Airlie [Wed, 23 Feb 2011 02:06:39 +0000 (12:06 +1000)]
Merge branch 'stable/ttm.pci-api.v5' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen into drm-next
* 'stable/ttm.pci-api.v5' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
ttm: Include the 'struct dev' when using the DMA API.
nouveau/ttm/PCIe: Use dma_addr if TTM has set it.
radeon/ttm/PCIe: Use dma_addr if TTM has set it.
ttm: Expand (*populate) to support an array of DMA addresses.
ttm: Utilize the DMA API for pages that have TTM_PAGE_FLAG_DMA32 set.
ttm: Introduce a placeholder for DMA (bus) addresses.
Chris Wilson [Wed, 12 Jan 2011 21:11:33 +0000 (21:11 +0000)]
drm: Trim the GEM mmap offset hashtab
Using an order 19 drm_ht for the mmap offsets is a little obscene. That
means that will a fully populated GTT with every single object mmaped at
least once in its lifetime, there will be exactly one object in each
bucket.
Typically systems only have at most a few thousand objects, though you
may see a KDE desktop hit 50000. And most of those should never be
mapped... On my systems, just using an order 10 ht would still have an
average occupancy less than 1, so apply a small safety factor and
use an order 12 ht, like the other mmap offset ht.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Dave Airlie <airlied@redhat.com>
Chris Wilson [Wed, 26 Jan 2011 09:49:47 +0000 (09:49 +0000)]
drm: Mark constant arrays of drm_display_mode const
... and fixup some methods to accept the constant argument.
Now that constant module arrays are loaded into read-only memory, using
const appropriately has some benefits beyond warning the programmer
about likely mistakes.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Dave Airlie <airlied@redhat.com>
Ben Skeggs [Wed, 2 Feb 2011 00:27:10 +0000 (00:27 +0000)]
drm/ttm: call driver move_notify() when doing system->tt bo moves
Nouveau doesn't have enough information at ttm_backend_func.bind() time
to implement things like tiled GART, or to keep a buffer at a constant
address in the GPU virtual address space no matter where in physical
memory it's placed.
To resolve this, nouveau will handle binding of all buffers to the GPU
itself from the move_notify() hook. This commit ensures it's called
for all buffer moves.
Talked to Dave about the impact on radeon, which uses move_notify, it
doesn't look like anything should break there.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Reviewed-by: Thomas Hellstrom <thomas@shipmail.org> Signed-off-by: Dave Airlie <airlied@redhat.com>
Daniel Vetter [Fri, 18 Feb 2011 16:59:21 +0000 (17:59 +0100)]
radeon: move blit functions to radeon_asic.h
Reviewed-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Dave Airlie <airlied@redhat.com>
Daniel Vetter [Fri, 18 Feb 2011 16:59:20 +0000 (17:59 +0100)]
radeon: kill decls for inline functions
Reviewed-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Dave Airlie <airlied@redhat.com>
Daniel Vetter [Fri, 18 Feb 2011 16:59:19 +0000 (17:59 +0100)]
radeon: consolidate asic-specific function decls for r600 & later
Now all the asic specific stuff ist mostly hid in radeon_asic.*
Reviewed-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Dave Airlie <airlied@redhat.com>
Daniel Vetter [Fri, 18 Feb 2011 16:59:15 +0000 (17:59 +0100)]
drm: mm: add helper to unwind scan state
With the switch to implicit free space accounting one pointer
got unused when scanning. Use it to create a single-linked list
to ensure correct unwinding of the scan state.
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Dave Airlie <airlied@redhat.com>
Daniel Vetter [Fri, 18 Feb 2011 16:59:14 +0000 (17:59 +0100)]
drm: mm: add api for embedding struct drm_mm_node
The old api has a two-step process: First search for a suitable
free hole, then allocate from that specific hole. No user used
this to do anything clever. So drop it for the embeddable variant
of the drm_mm api (the old one retains this ability, for the time
being).
With struct drm_mm_node embedded, we cannot track allocations
anymore by checking for a NULL pointer. So keep track of this
and add a small helper drm_mm_node_allocated.
Also add a function to move allocations between different struct
drm_mm_node.
v2: Implement suggestions by Chris Wilson.
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Dave Airlie <airlied@redhat.com>
Daniel Vetter [Fri, 18 Feb 2011 16:59:12 +0000 (17:59 +0100)]
drm: mm: track free areas implicitly
The idea is to track free holes implicitly by marking the allocation
immediatly preceeding a hole.
To avoid an ugly corner case add a dummy head_node to struct drm_mm
to track the hole that spans to complete allocation area when the
memory manager is empty.
To guarantee that there's always a preceeding/following node (that might
be marked as hole_follows == 1), move the mm->node_list list_head to the
head_node.
The main allocator and fair-lru scan code actually becomes simpler.
Only the debug code slightly suffers because free areas are no longer
explicit.
Also add drm_mm_for_each_node (which will be much more useful when
struct drm_mm_node is embeddable).
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Dave Airlie <airlied@redhat.com>
Daniel Vetter [Fri, 18 Feb 2011 16:59:11 +0000 (17:59 +0100)]
drm/nouveau: don't munge in drm_mm internals
Nouveau was checking drm_mm internals on teardown to see whether the
memory manager was initialized. Hide these internals in a small
inline helper function.
Acked-by: Ben Skeggs <bskeggs@redhat.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Dave Airlie <airlied@redhat.com>
If the TTM layer has used the DMA API to setup pages that are
TTM_PAGE_FLAG_DMA32 (look at patch titled: "ttm: Utilize the
DMA API for pages that have TTM_PAGE_FLAG_DMA32 set"), lets
use it when programming the GART in the PCIe type cards.
This patch skips doing the pci_map_page (and pci_unmap_page) if
there is a DMA addresses passed in for that page. If the dma_address
is zero (or DMA_ERROR_CODE), then we continue on with our old
behaviour.
[v2: Added a review-by tag]
Reviewed-by: Thomas Hellstrom <thomas@shipmail.org> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Tested-by: Ian Campbell <ian.campbell@citrix.com>
If the TTM layer has used the DMA API to setup pages that are
TTM_PAGE_FLAG_DMA32 (look at patch titled: "ttm: Utilize the dma_addr_t
array for pages that are to in DMA32 pool."), lets use it
when programming the GART in the PCIe type cards.
This patch skips doing the pci_map_page (and pci_unmap_page) if
there is a DMA addresses passed in for that page. If the dma_address
is zero (or DMA_ERROR_CODE), then we continue on with our old
behaviour.
Ben Skeggs [Mon, 7 Feb 2011 00:49:39 +0000 (10:49 +1000)]
drm/nv40: fix tiling-related setup for a number of chipsets
Due to the default case handling the older chipsets, a bunch of the newer
ones ended up having the wrong tiling regs used. This commit switches the
default case to handle the newest chipsets.
This also makes nv4e touch the "extra" tiling regs. "nv" doesn't touch
them for C51 but traces of the NVIDIA binary driver show it being done
there.
I couldn't find NV41/NV45 traces to confirm the behaviour there, but an
educated guess was taken at each of them.
Francisco Jerez [Thu, 3 Feb 2011 00:53:18 +0000 (01:53 +0100)]
drm/nv04-nv40: Fix NULL dereference when we fail to find an LVDS native mode.
Reported-by: Alex Buell <alex.buell@munted.org.uk> Signed-off-by: Francisco Jerez <currojerez@riseup.net> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Francisco Jerez [Thu, 3 Feb 2011 00:49:33 +0000 (01:49 +0100)]
drm/nv10: Fix crash when allocating a BO larger than half the available VRAM.
Reported-by: Alex Buell <alex.buell@munted.org.uk> Signed-off-by: Francisco Jerez <currojerez@riseup.net> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Dave Airlie [Mon, 7 Feb 2011 02:16:14 +0000 (12:16 +1000)]
drm: dumb scanout create/mmap for intel/radeon (v3)
This is just an idea that might or might not be a good idea,
it basically adds two ioctls to create a dumb and map a dumb buffer
suitable for scanout. The handle can be passed to the KMS ioctls to create
a framebuffer.
It looks to me like it would be useful in the following cases:
a) in development drivers - we can always provide a shadowfb fallback.
b) libkms users - we can clean up libkms a lot and avoid linking
to libdrm_*.
c) plymouth via libkms is a lot easier.
Userspace bits would be just calls + mmaps. We could probably
mark these handles somehow as not being suitable for acceleartion
so as top stop people who are dumber than dumb.
Arnd Bergmann [Tue, 25 Jan 2011 22:17:15 +0000 (23:17 +0100)]
drm/i810: remove the BKL
SMP i810 systems were practically nonexistent and the configuration
was not officially supported by Intel at the time when Pentium-III
was common.
With this change, it is still possible to build a distribution kernel
that has support for SMP and includes the i810 driver without the BKL.
As a precaution, check for the theoretical SMP case at run time and
refuse to load the driver.
We also need to disable CONFIG_PREEMPT builds for this driver.
Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: dri-devel@lists.freedesktop.org Signed-off-by: Dave Airlie <airlied@redhat.com>
Arnd Bergmann [Tue, 25 Jan 2011 22:17:16 +0000 (23:17 +0100)]
drm: remove i830 driver
This driver is one of the last users of the big kernel
lock, which is going away. All the hardware supported
by this driver also works with the newer i915 driver,
and recent X.org releases only work with that driver
anyway.
Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: dri-devel@lists.freedesktop.org Signed-off-by: Dave Airlie <airlied@redhat.com>
Linus Torvalds [Sun, 6 Feb 2011 20:05:15 +0000 (12:05 -0800)]
Merge branch 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
lockdep, timer: Fix del_timer_sync() annotation
RTC: Prevents a division by zero in kernel code.
Linus Torvalds [Sun, 6 Feb 2011 20:04:49 +0000 (12:04 -0800)]
Merge branch 'irq-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'irq-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
m32r: Fixup last __do_IRQ leftover
genirq: Add missing status flags to modification mask
Linus Torvalds [Sun, 6 Feb 2011 20:03:10 +0000 (12:03 -0800)]
Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86-32: Make sure the stack is set up before we use it
x86, mtrr: Avoid MTRR reprogramming on BP during boot on UP platforms
x86, nx: Don't force pages RW when setting NX bits
Linus Torvalds [Sun, 6 Feb 2011 20:02:42 +0000 (12:02 -0800)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
ALSA: use linux/io.h to fix compile warnings
ALSA: hda - Fix memory leaks in conexant jack arrays
ASoC: CX20442: fix NULL pointer dereference
ASoC: Amstrad Delta: fix const related build error
ALSA: oxygen: fix output routing on Xonar DG
sound: silent echo'ed messages in Makefile
ASoC: Fix mask/val_mask confusion snd_soc_dapm_put_volsw()
ASoC: DaVinci: fix kernel panic due to uninitialized platform_data
ALSA: HDA: Fix microphone(s) on Lenovo Edge 13
ASoC: Fix module refcount for auxiliary devices
ALSA: HDA: cxt5066 - Use asus model for Asus U50F, select correct SPDIF output
ALSA: HDA: Add a new model "asus" for Conexant 5066/205xx
ALSA: HDA: Refactor some redundant code for Conexant 5066/205xx
Ben Hutchings [Sat, 11 Dec 2010 20:17:54 +0000 (20:17 +0000)]
arm/ixp4xx: Rename FREQ macro to avoid collisions
FREQ is a ridiculously short name for a platform-specific macro in a
generic header, and it now conflicts with an enumeration in the
gspca/ov519 driver.
Also delete conditional reference to ixp4xx_get_board_tick_rate()
which is not defined anywhere.
Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: Krzysztof Hałasa <khc@pm.waw.pl>
Thomas Gleixner [Sat, 5 Feb 2011 20:39:28 +0000 (21:39 +0100)]
m32r: Fixup last __do_IRQ leftover
Somehow I managed to miss the last __do_IRQ caller when I cleanup the
remaining users. m32r is fully converted to the generic irq layer, but
I managed to not commit the conversion of __do_IRQ() to
generic_handle_irq() after compile testing the quilt series :(
Pointed-out-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Hirokazu Takata <takata@linux-m32r.org> Cc: Paul Mundt <lethal@linux-sh.org>
H. Peter Anvin [Sat, 5 Feb 2011 00:14:11 +0000 (16:14 -0800)]
x86-32: Make sure the stack is set up before we use it
Since checkin ebba638ae723d8a8fc2f7abce5ec18b688b791d7 we call
verify_cpu even in 32-bit mode. Unfortunately, calling a function
means using the stack, and the stack pointer was not initialized in
the 32-bit setup code! This code initializes the stack pointer, and
simplifies the interface slightly since it is easier to rely on just a
pointer value rather than a descriptor; we need to have different
values for the segment register anyway.
This retains start_stack as a virtual address, even though a physical
address would be more convenient for 32 bits; the 64-bit code wants
the other way around...
Reported-by: Matthieu Castet <castet.matthieu@free.fr>
LKML-Reference: <4D41E86D.8060205@free.fr> Tested-by: Kees Cook <kees.cook@canonical.com> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (68 commits)
net: can: janz-ican3: world-writable sysfs termination file
net: can: at91_can: world-writable sysfs files
MAINTAINERS: update email ids of the be2net driver maintainers.
bridge: Don't put partly initialized fdb into hash
r8169: prevent RxFIFO induced loops in the irq handler.
r8169: RxFIFO overflow oddities with 8168 chipsets.
r8169: use RxFIFO overflow workaround for 8168c chipset.
include/net/genetlink.h: Allow genlmsg_cancel to accept a NULL argument
net: Provide compat support for SIOCGETMIFCNT_IN6 and SIOCGETSGCNT_IN6.
net: Support compat SIOCGETVIFCNT ioctl in ipv4.
net: Fix bug in compat SIOCGETSGCNT handling.
niu: Fix races between up/down and get_stats.
tcp_ecn is an integer not a boolean
atl1c: Add missing PCI device ID
s390: Fix possibly wrong size in strncmp (smsgiucv)
s390: Fix wrong size in memcmp (netiucv)
qeth: allow OSA CHPARM change in suspend state
qeth: allow HiperSockets framesize change in suspend
qeth: add more strict MTU checking
qeth: show new mac-address if its setting fails
...
Vasiliy Kulikov [Fri, 4 Feb 2011 02:23:50 +0000 (02:23 +0000)]
net: can: at91_can: world-writable sysfs files
Don't allow everybody to write to mb0_id file.
Signed-off-by: Vasiliy Kulikov <segoon@openwall.com> Acked-by: Kurt Van Dijck <kurt.van.dijck@eia.be> Signed-off-by: David S. Miller <davem@davemloft.net>
Pavel Emelyanov [Fri, 4 Feb 2011 21:02:36 +0000 (13:02 -0800)]
bridge: Don't put partly initialized fdb into hash
The fdb_create() puts a new fdb into hash with only addr set. This is
not good, since there are callers, that search the hash w/o the lock
and access all the other its fields.
Applies to current netdev tree.
Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Tetsuo Handa [Fri, 4 Feb 2011 18:13:24 +0000 (18:13 +0000)]
CRED: Fix kernel panic upon security_file_alloc() failure.
In get_empty_filp() since 2.6.29, file_free(f) is called with f->f_cred == NULL
when security_file_alloc() returned an error. As a result, kernel will panic()
due to put_cred(NULL) call within RCU callback.
Fix this bug by assigning f->f_cred before calling security_file_alloc().
Linus Torvalds [Fri, 4 Feb 2011 18:02:22 +0000 (10:02 -0800)]
Merge branch 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6
* 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: (27 commits)
gpu/stub: fix acpi_video build error, fix stub kconfig dependencies
drm/radeon/kms: dynamically allocate power state space
drm/radeon/kms: fix s/r issues with bios scratch regs
agp: ensure GART has an address before enabling it
Revert "agp: AMD AGP is used on UP1100 & UP1500 alpha boxen"
amd-k7-agp: remove non-x86 code
drm/radeon/kms/evergreen: always set certain VGT regs at CP init
drm/radeon/kms: add updated ib_execute function for evergreen
drm/radeon: remove 0x4243 pci id
drm/radeon/kms: Enable new pll calculation for avivo+ asics
drm/radeon/kms: add new pll algo for avivo asics
drm/radeon/kms: add pll debugging output
drm/radeon/kms: switch back to min->max pll post divider iteration
drm/radeon/kms: rv6xx+ thermal sensor fixes
drm/nv50: fix display on 0x50
drm/nouveau: correctly pair hwmon_init and hwmon_fini
drm/i915: Only bind to function 0 of the PCI device
drm/i915: Suppress spurious vblank interrupts
drm: Avoid leak of adjusted mode along quick set_mode paths
drm: Simplify and defend later checks when disabling a crtc
...
Keith Packard [Fri, 4 Feb 2011 00:57:28 +0000 (16:57 -0800)]
drm: Only set DPMS ON when actually configuring a mode
In drm_crtc_helper_set_config, instead of always forcing all outputs
to DRM_MODE_DPMS_ON, only set them if the CRTC is actually getting a
mode set, as any mode set will turn all outputs on.
This fixes https://lkml.org/lkml/2011/1/24/457
Signed-off-by: Keith Packard <keithp@keithp.com> Cc: stable@kernel.org (2.6.37) Reported-and-tested-by: Carlos R. Mafra <crmafra2@gmail.com> Tested-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Francois Romieu [Thu, 3 Feb 2011 11:02:36 +0000 (12:02 +0100)]
r8169: RxFIFO overflow oddities with 8168 chipsets.
Some experiment-based action to prevent my 8168 chipsets locking-up hard
in the irq handler under load (pktgen ~1Mpps). Apparently a reset is not
always mandatory (is it at all ?).
- RTL_GIGA_MAC_VER_12
- RTL_GIGA_MAC_VER_25
Missed ~55% packets. Note:
- this is an old SiS 965L motherboard
- the 8168 chipset emits (lots of) control frames towards the sender
- RTL_GIGA_MAC_VER_26
The chipset does not go into a frenzy of mac control pause when it
crashes yet but it can still be crashed. It needs more work.
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com> Cc: Ivan Vecera <ivecera@redhat.com> Cc: Hayes <hayeswang@realtek.com>
Ivan Vecera [Thu, 27 Jan 2011 11:24:11 +0000 (12:24 +0100)]
r8169: use RxFIFO overflow workaround for 8168c chipset.
I found that one of the 8168c chipsets (concretely XID 1c4000c0) starts
generating RxFIFO overflow errors. The result is an infinite loop in
interrupt handler as the RxFIFOOver is handled only for ...MAC_VER_11.
With the workaround everything goes fine.
Signed-off-by: Ivan Vecera <ivecera@redhat.com> Acked-by: Francois Romieu <romieu@fr.zoreil.com> Cc: Hayes <hayeswang@realtek.com>
Peter Zijlstra [Thu, 3 Feb 2011 14:09:41 +0000 (15:09 +0100)]
lockdep, timer: Fix del_timer_sync() annotation
Calling local_bh_enable() will want to actually start processing
softirqs, which isn't a good idea since this can get called with IRQs
disabled.
Cure this by using _local_bh_enable() which doesn't start processing
softirqs, and use raw_local_irq_save() to avoid any softirqs from
happening without letting lockdep think IRQs are in fact disabled.
Reported-by: Nick Bowler <nbowler@elliptictech.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Reviewed-by: Yong Zhang <yong.zhang0@gmail.com>
LKML-Reference: <20110203141548.039540914@chello.nl> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Julia Lawall [Fri, 28 Jan 2011 05:43:40 +0000 (05:43 +0000)]
include/net/genetlink.h: Allow genlmsg_cancel to accept a NULL argument
nlmsg_cancel can accept NULL as its second argument, so for similarity,
this patch extends genlmsg_cancel to be able to accept a NULL second
argument as well.
Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: David S. Miller <davem@davemloft.net>
The comments under "config STUB_POULSBO" are close to correct,
but they are not being followed. This patch updates them to reflect
the requirements for THERMAL.
This build error is caused by STUB_POULSBO selecting ACPI_VIDEO
when ACPI_VIDEO's config requirements are not met.
David S. Miller [Fri, 4 Feb 2011 01:21:31 +0000 (17:21 -0800)]
net: Fix bug in compat SIOCGETSGCNT handling.
Commit 709b46e8d90badda1898caea50483c12af178e96 ("net: Add compat
ioctl support for the ipv4 multicast ioctl SIOCGETSGCNT") added the
correct plumbing to handle SIOCGETSGCNT properly.
However, whilst definiting a proper "struct compat_sioc_sg_req" it
isn't actually used in ipmr_compat_ioctl().
Correct this oversight.
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Fri, 4 Feb 2011 00:31:43 +0000 (16:31 -0800)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hch/hfsplus
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hch/hfsplus:
hfsplus: fix up a comparism in hfsplus_file_extend
hfsplus: fix two memory leaks in wrapper.c
hfsplus: do not leak buffer on error
hfsplus: fix failed mount handling
David S. Miller [Fri, 4 Feb 2011 00:12:50 +0000 (16:12 -0800)]
niu: Fix races between up/down and get_stats.
As reported by Flavio Leitner, there is no synchronization to protect
NIU's get_stats method from seeing a NULL pointer in either
np->rx_rings or np->tx_rings. In fact, as far as ->ndo_get_stats
is concerned, these values are set completely asynchronously.
Flavio attempted to fix this using a RW semaphore, which in fact
works most of the time. However, dev_get_stats() can be invoked
from non-sleepable contexts in some cases, so this fix doesn't
work in all cases.
So instead, control the visibility of the np->{rx,tx}_ring pointers
when the device is being brough up, and use properties of the device
down sequence to our advantage.
In niu_get_stats(), return immediately if netif_running() is false.
The device shutdown sequence first marks the device as not running (by
clearing the __LINK_STATE_START bit), then it performans a
synchronize_rcu() (in dev_deactive_many()), and then finally it
invokes the driver ->ndo_stop() method.
This guarentees that all invocations of niu_get_stats() either see
netif_running() as false, or they see the channel pointers before
->ndo_stop() clears them out.
If netif_running() is true, protect against startup races by loading
the np->{rx,tx}_rings pointer into a local variable, and punting if
it is NULL. Use ACCESS_ONCE to prevent the compiler from reloading
the pointer on us.
Also, during open, control the order in which the pointers and the
ring counts become visible globally using SMP write memory barriers.
We make sure the np->num_{rx,tx}_rings value is stable and visible
before np->{rx,tx}_rings is.
Such visibility control is not necessary on the niu_free_channels()
side because of the RCU sequencing that happens during device down as
described above. We are always guarenteed that all niu_get_stats
calls are finished, or will see netif_running() false, by the time
->ndo_stop is invoked.
Reported-by: Flavio Leitner <fleitner@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Alex Deucher [Wed, 2 Feb 2011 23:42:03 +0000 (18:42 -0500)]
drm/radeon/kms: dynamically allocate power state space
We previously used a static array, but some new systems
had more states then we had array space, so dynamically
allocate space based on the number of states in the vbios.
Alex Deucher [Thu, 3 Feb 2011 00:46:06 +0000 (19:46 -0500)]
drm/radeon/kms: fix s/r issues with bios scratch regs
The accelerate mode bit gets checked by certain atom
command tables to set up some register state. It needs
to be clear when setting modes and set when not.
Stephen Kitt [Mon, 31 Jan 2011 22:25:43 +0000 (14:25 -0800)]
agp: ensure GART has an address before enabling it
Some BIOSs (eg. the AMI BIOS on the Asus P4P800 motherboard) don't
initialise the GART address, and pcibios_assign_resources() can ignore it
because it can be marked as a host bridge (see
https://bugzilla.kernel.org/show_bug.cgi?id=24392#c5 for details). This
was handled correctly up to 2.6.35, but the pci_enable_device() cleanup in
2.6.36 96576a9e1a0cdb8 ("agp: intel-agp: do not use PCI resources before
pci_enable_device()") means that the kernel tries to enable the GART
before assigning it an address; in such cases the GART overlaps with other
device assignments and ends up being disabled.
This patch fixes https://bugzilla.kernel.org/show_bug.cgi?id=24392
Note that I imagine efficeon-agp.c probably has the same problem, but
I can't test that and I'd like to make sure this patch is suitable for
-stable (since 2.6.36 and 2.6.37 are affected).
Signed-off-by: Stephen Kitt <steve@sk2.org> Cc: Bjorn Helgaas <bjorn.helgaas@hp.com> Cc: Maciej Rutecki <maciej.rutecki@gmail.com> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Cc: Kulikov Vasiliy <segooon@gmail.com> Cc: Florian Mickler <florian@mickler.org> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Dave Airlie <airlied@redhat.com>
The AMD 751 and 761 chipsets are used on the UP1000, UP1100, and UP1500
OEM motherboards, but they neglect to do anything to make AGP work.
According to Ivan Kokshaysky:
There is quite fundamental conflict between the Alpha architecture and
x86 AGP implementation - Alpha is entirely cache coherent by design,
while x86 AGP is not (I mean native AGP DMA transactions, not a PCI over
AGP). There are no such things as non-cacheable mappings or software
support for cache flushing/invalidation on Alpha, so x86 AGP code won't
work on Nautilus.
So there's no point in allowing this driver to be configured on Alpha.
Signed-off-by: Matt Turner <mattst88@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
Currently the error handling in hfsplus_fill_super is a mess, and can
lead to accessing fields in the superblock that haven't been even set
up yet. Fix this by making sure we do not set up sb->s_root until we
have the mount fully set up, and before that do proper step by step
unwinding instead of using hfsplus_put_super as a big hammer.
Reported-by: Dan Williams <dcbw@redhat.com> Signed-off-by: Christoph Hellwig <hch@tuxera.com>
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6:
[SCSI] libsas: fix runaway error handler problem
[SCSI] fix incorrect value of SCSI_MAX_SG_CHAIN_SEGMENTS due to include file ordering
[SCSI] arcmsr: Fix the issue of system hangup after commands timeout on ARC-1200
[SCSI] mpt2sas: fix Integrated Raid unsynced on shutdown problem
[SCSI] mpt2sas: Kernel Panic during Large Topology discovery
[SCSI] mpt2sas: Fix the race between broadcast asyn event and scsi command completion
[SCSI] mpt2sas: Correct resizing calculation for max_queue_depth
[SCSI] mpt2sas: fix internal device reset for older firmware prior to MPI Rev K
[SCSI] mpt2sas: Fix device removal handshake for zoned devices
Suresh Siddha [Thu, 3 Feb 2011 20:20:04 +0000 (12:20 -0800)]
x86, mm: avoid possible bogus tlb entries by clearing prev mm_cpumask after switching mm
Clearing the cpu in prev's mm_cpumask early will avoid the flush tlb
IPI's while the cr3 is still pointing to the prev mm. And this window
can lead to the possibility of bogus TLB fills resulting in strange
failures. One such problematic scenario is mentioned below.
T1. CPU-1 is context switching from mm1 to mm2 context and got a NMI
etc between the point of clearing the cpu from the mm_cpumask(mm1)
and before reloading the cr3 with the new mm2.
T2. CPU-2 is tearing down a specific vma for mm1 and will proceed with
flushing the TLB for mm1. It doesn't send the flush TLB to CPU-1
as it doesn't see that cpu listed in the mm_cpumask(mm1).
T3. After the TLB flush is complete, CPU-2 goes ahead and frees the
page-table pages associated with the removed vma mapping.
T4. CPU-2 now allocates those freed page-table pages for something
else.
T5. As the CR3 and TLB caches for mm1 is still active on CPU-1, CPU-1
can potentially speculate and walk through the page-table caches
and can insert new TLB entries. As the page-table pages are
already freed and being used on CPU-2, this page walk can
potentially insert a bogus global TLB entry depending on the
(random) contents of the page that is being used on CPU-2.
T6. This bogus TLB entry being global will be active across future CR3
changes and can result in weird memory corruption etc.
To avoid this issue, for the prev mm that is handing over the cpu to
another mm, clear the cpu from the mm_cpumask(prev) after the cr3 is
changed.
Marking it for -stable, though we haven't seen any reported failure that
can be attributed to this.
This patch prevents a user space program from calling the RTC_IRQP_SET
ioctl with a negative value of frequency. Also, if this call is make
with a zero value of frequency, there would be a division by zero in the
kernel code.
[jstultz: Also initialize irq_freq to 1 to catch other divbyzero issues]
CC: Alessandro Zummo <a.zummo@towertech.it> CC: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Marcelo Roberto Jimenez <mroberto@cpti.cetuc.puc-rio.br> Signed-off-by: John Stultz <john.stultz@linaro.org>
projects / mirror_ubuntu-kernels.git / log