Some x86 platforms like Intel MID platforms don't have i8042 controllers,
and i8042 driver's probe to some legacy IO ports may hang the MID
processor. With this hook, i8042 driver can runtime check and skip the
probe when the pretection fail which also saves some probe time
[ hpa note: this is currently a compile-time check, which breaks the
i386 allyesconfig build. This patch series thus does fix a regression. ]
Signed-off-by: Feng Tang <feng.tang@intel.com>
LKML-Reference: <1278342202-10973-2-git-send-email-feng.tang@intel.com>
Acked-by: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
* 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6:
drm: correctly update connector DPMS status in drm_fb_helper
drm/radeon/kms: fix shared ddc handling
drm/ttm: Allocate the page pool manager in the heap.
We don't currently update the DPMS status of the connector (both in the
connector itself and the connector's DPMS property) in the fb helper
code. This means that if the kernel FB core has blanked the screen,
sysfs will still show a DPMS status of "on". It also means that when X
starts, it will try to light up the connectors, but the drm_crtc_helper
code will ignore the DPMS change since according to the connector, the
DPMS status is already on.
Fixes https://bugs.freedesktop.org/show_bug.cgi?id=28436 (the annoying
"my screen was blanked when I started X and now it won't light up" bug).
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Repeated ttm_page_alloc_init/fini fails noisily because the pool
manager kobj isn't zeroed out between uses (we could do just that but
statically allocated kobjects are generally considered a bad thing).
Move it to kzalloc'ed memory.
Note that this patch drops the refcounting behavior of the pool
allocator init/fini functions: it would have led to a race condition
in its current form, and anyway it was never exploited.
This fixes a regression with reloading kms modules at runtime, since
page allocator was introduced.
Signed-off-by: Francisco Jerez <currojerez@riseup.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This patch introduces 3 VFS accessors: 'sb_mark_dirty()',
'sb_mark_clean()', and 'sb_is_dirty()'. They simply
set 'sb->s_dirt' or test 'sb->s_dirt'. The plan is to make
every FS use these accessors later instead of manipulating
the 'sb->s_dirt' flag directly.
Ultimately, this change is a preparation for the periodic
superblock synchronization optimization which is about
preventing the "sync_supers" kernel thread from waking up
even if there is nothing to synchronize.
This patch does not do any functional change, just adds
accessor functions.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
rbtree: Undo augmented trees performance damage and regression
x86, Calgary: Limit the max PHB number to 256
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: (22 commits)
MIPS: Return after handling coprocessor 2 exception
MIPS: BCM47xx: Add NVRAM support devices
MIPS: Loongson: Define rtc device on MC146818-equipped systems
MIPS: MT: Fix FPU affinity.
MIPS: Oprofile: Fixup of loongson2_exit()
MIPS: Alchemy: sleepcode without compile-time cputype dependencies
MIPS: Tracing: Cleanup of address space checking
MIPS: Tracing: Cleanup of function graph tracer
MIPS: Tracing: Reduce the overhead of dynamic Function Tracer
MIPS: Tracing: Cleanup of instructions used
MIPS: Tracing: Fix 32-bit support with -mmcount-ra-address
MIPS: Tracing: Fix argument passing of the 32bit support with gcc 4.5
MIPS: Tracing: Cleanup comments
MIPS: Tracing: Cleanup the arguments passing of prepare_ftrace_return
MIPS: Tracing: Merge adjacent #ifdefs with same condition.
MIPS: AR7, BCM63xx: fix gpio_to_irq() return value
MIPS: Restore signalling NaN behaviour for abs.[sd]
MIPS: Loongson: CS5536: Fix ISA support
MIPS: Loongson: Add a missing break statement in CS5536 IDE code
MIPS: Loongson: CS5536: Add missing RDMSRs for IDE and USB
...
When trying to netboot a Linksys WRT54GS WLAN router, the bootup fails,
because of following error message:
...
[ 0.424000] b44: b44.c:v2.0
[ 0.424000] b44: Invalid MAC address found in EEPROM
[ 0.432000] b44 ssb0:1: Problem fetching invariants of chip,aborting
[ 0.436000] b44: probe of ssb0:1 failed with error -22
...
The router uses a CFE bootloader, but most of the needed environment
variables for network card initialization, are not available from CFE
via printenv and even though not via cfe_getenv().
The required environment variables are saved in a special partition
in flash memory. The attached patch implement nvram_getenv and enables
bootup via NFS root on my router.
Most of the patch is extracted from the OpenWrt subversion repository and
stripped down and cleaned up to just fix this issue.
[Ralf: sorted out header file inclusions. Lots of unneded headers and such
that should have been included.]
Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
Reviewed-by: Phil Sutter <phil@nwl.cc>
To: linux-mips@linux-mips.org
Cc: Hauke Mehrtens <hauke@hauke-m.de>
Patchwork: http://patchwork.linux-mips.org/patch/1359/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
The fragile MT sys_sched_setaffinity wrapper needs its regular dose of
fixes.
Nose-poked-at-pile-o-crap-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This patch adds an inline function in_module() to check which space the
instruction pointer in, kernel space or module space.
Note: This will not work when the kernel space and module space are the
same. If they are the same, we need to modify scripts/recordmcount.pl,
ftrace_make_nop/call() and the other related parts to ensure the
enabling/disabling of the calling site to _mcount is right for both
kernel and module.
[Ralf: It also is still incorrect for some 64-bit kernels.]
Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips <linux-mips@linux-mips.org>
Cc: David Daney <david.s.daney@gmail.com>
Patchwork: http://patchwork.linux-mips.org/patch/1232/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
With the help of uasm this patch encodes the instructions of the dynamic
function tracer in ftrace_dyn_arch_init() when initializing it.
As a result we can remove the dynamic encoding of instructions in
ftrace_make_nop()/call(), ftrace_enable_ftrace_graph_caller() and remove
the macro jump_insn_encode() and at last this reduce the overhead of
dynamic Function Tracer. This also is cleaner.
Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips <linux-mips@linux-mips.org>
Cc: David Daney <david.s.daney@gmail.com>
Patchwork: http://patchwork.linux-mips.org/patch/1230/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Reimplement augmented RB-trees without sprinkling extra branches
all over the RB-tree code (which lives in the scheduler hot path).
This approach is 'borrowed' from Fabio's BFQ implementation and
relies on traversing the rebalance path after the RB-tree-op to
correct the heap property for insertion/removal and make up for
the damage done by the tree rotations.
For insertion the rebalance path is trivially that from the new
node upwards to the root, for removal it is that from the deepest
node in the path from the to be removed node that will still
be around after the removal.
[ This patch also fixes a video driver regression reported by
Ali Gholami Rudi - the memtype->subtree_max_end was updated
incorrectly. ]
Acked-by: Suresh Siddha <suresh.b.siddha@intel.com>
Acked-by: Venkatesh Pallipadi <venki@google.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Tested-by: Ali Gholami Rudi <ali@rudi.ir>
Cc: Fabio Checconi <fabio@gandalf.sssup.it>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
LKML-Reference: <1275414172.27810.27961.camel@twins>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
The "present" flag was initialized too late -- possibly, a card
was already registered at this time, so re-setting the flag to 0
caused pcmcia_dev_present() to fail.
Reported-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
* master.kernel.org:/home/rmk/linux-2.6-arm:
ARM: 6205/1: perf: ensure counter delta is treated as unsigned
ARM: 6202/1: Do not ARM_DMA_MEM_BUFFERABLE on RealView boards with L210/L220
ARM: 6201/1: RealView: Do not use outer_sync() on ARM11MPCore boards with L220
ARM: 6195/1: OMAP3: pmu: make CPU_HAS_PMU dependent on OMAP3_EMU
ARM: 6194/1: change definition of cpu_relax() for ARM11MPCore
ARM: 6193/1: RealView: Align the machine_desc.phys_io to 1MB section
ARM: 6192/1: VExpress: Align the machine_desc.phys_io to 1MB section
ARM: 6188/1: Add a config option for the ARM11MPCore DMA cache maintenance workaround
ARM: 6187/1: The v6_dma_inv_range() function must preserve data on SMP
ARM: 6186/1: Avoid the CONSISTENT_DMA_SIZE warning on noMMU builds
ARM: mx3: mx31lilly: fix build error for !CONFIG_USB_ULPI
[ARM] mmp: fix build failure due to IRQ_PMU depends on ARCH_PXA
[ARM] pxa/mioa701: fix camera regression
[ARM] pxa/z2: fix flash layout to final version
[ARM] pxa/z2: fix missing include in battery driver
[ARM] pxa: fix incorrect gpio type in udc_pxa2xx.h
* 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
perf, x86: Fix incorrect branches event on AMD CPUs
perf tools: Fix find tids routine by excluding "." and ".."
x86: Send a SIGTRAP for user icebp traps
We should initialize the module dynamic debug datastructures
only after determining that the module is not loaded yet. This
fixes a bug that introduced in 2.6.35-rc2, where when a trying
to load a module twice, we also load it's dynamic printing data
twice which causes all sorts of nasty issues. Also handle
the dynamic debug cleanup later on failure.
Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> (removed a #ifdef)
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* 'for-linus' of git://oss.sgi.com/xfs/xfs:
xfs: remove block number from inode lookup code
xfs: rename XFS_IGET_BULKSTAT to XFS_IGET_UNTRUSTED
xfs: validate untrusted inode numbers during lookup
xfs: always use iget in bulkstat
xfs: prevent swapext from operating on write-only files
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/i7core:
MAINTAINERS: Add an entry for i7core_edac
i7core_edac: Avoid doing multiple probes for the same card
i7core_edac: Properly discover the first QPI device
* 'rc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6:
kbuild: Propagate LOCALVERSION= down to scripts/setlocalversion
kbuild: Clean up and speed up the localversion logic
Hardware performance counters on ARM are 32-bits wide but atomic64_t
variables are used to represent counter data in the hw_perf_event structure.
The armpmu_event_update function right-shifts a signed 64-bit delta variable
and adds the result to the event count. This can lead to shifting in sign-bits
if the MSB of the 32-bit counter value is set. This results in perf output
such as:
Performance counter stats for 'sleep 20':
18446744073460670464 cycles <-- 0xFFFFFFFFF12A6000
7783773 instructions # 0.000 IPC
465 context-switches
161 page-faults
1172393 branches
20.154242147 seconds time elapsed
This patch ensures that the delta value is treated as unsigned so that the
right shift sets the upper bits to zero.
Cc: <stable@kernel.org>
Acked-by: Jamie Iles <jamie.iles@picochip.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
