Alan Cox [Mon, 22 Jun 2009 17:42:29 +0000 (18:42 +0100)]
ppp: Fix throttling bugs
The ppp layer goes around calling the unthrottle method from non sleeping
paths. This isn't safe because the unthrottle methods in the tty layer need
to be able to sleep (consider a USB dongle).
Until now this didn't show up because the ppp layer never actually throttled
a port so the unthrottle was always a no-op. Currently it's a mutex taking
path so warnings are spewed if the unthrottle occurs via certain paths.
Fix this by removing the unneccessary unthrottle calls.
Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Roel Kluin [Mon, 22 Jun 2009 17:41:56 +0000 (18:41 +0100)]
serial: fix off by one errors
In zs_console_putchar() occurs:
if (zs_transmit_drain(zport, irq))
write_zsdata(zport, ch);
However if in zs_transmit_drain() no empty Tx Buffer occurs, limit reaches
-1 => true, and the write still occurs.
This patch changes postfix to prefix decrements in this and similar
functions to prevent similar mistakes in the future. This decreases the
iterations with one but the chosen loop count was arbitrary anyway.
In sunhv limit reaches -1, not 0, so the test is off by one.
Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Maciej W. Rozycki <macro@linux-mips.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Mike Frysinger [Mon, 22 Jun 2009 17:41:47 +0000 (18:41 +0100)]
serial: bfin_5xx: fix building as module when early printk is enabled
Since early printk only makes sense/works when the serial driver is built
into the kernel, disable the option for this driver when it is going to be
built as a module. Otherwise we get build failures due to the ifdef
handling.
Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Mike Frysinger [Mon, 22 Jun 2009 17:37:24 +0000 (18:37 +0100)]
serial: bfin_5xx: add missing spin_lock init
The Blackfin serial driver never initialized the spin_lock that is part of
the serial core structure, but we never noticed because spin_lock's are
rarely enabled on UP systems. Yeah lockdep and friends.
Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
FUJITA Tomonori [Mon, 22 Jun 2009 15:54:27 +0000 (16:54 +0100)]
parport_pc: set properly the dma_mask for parport_pc device
parport_pc_probe_port() creates the own 'parport_pc' device if the
device argument is NULL. Then parport_pc_probe_port() doesn't
initialize the dma_mask and coherent_dma_mask of the device and calls
dma_alloc_coherent with it. dma_alloc_coherent fails because
dma_alloc_coherent() doesn't accept the uninitialized dma_mask:
http://lkml.org/lkml/2009/6/16/150
Long ago, X86_32 and X86_64 had the own dma_alloc_coherent
implementations; X86_32 accepted a device having dma_mask that is not
initialized however X86_64 didn't. When we merged them, we chose to
prohibit a device having dma_mask that is not initialized. I think
that it's good to require drivers to set up dma_mask (and
coherent_dma_mask) properly if the drivers want DMA.
Jens Rottmann [Mon, 22 Jun 2009 15:51:49 +0000 (16:51 +0100)]
parport_pc: after superio probing restore original register values
CONFIG_PARPORT_PC_SUPERIO probes for various superio chips by writing
byte sequences to a set of different potential I/O ranges. But the
probed ranges are not exclusive to parallel ports. Some of our boards
just happen to have a watchdog in one of them. Took us almost a week
to figure out why some distros reboot without warning after running
flawlessly for 3 hours. For exactly 170 = 0xAA minutes, that is ...
Fixed by restoring original values after probing. Also fixed too small
request_region() in detect_and_report_it87().
Signed-off-by: Jens Rottmann <JRottmann@LiPPERTEmbedded.de> Signed-off-by: Alan Cox <alan@linux.intel.com> Cc: <stable@kernel.org> Acked-by: Jeff Garzik <jgarzik@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Sun, 21 Jun 2009 20:14:22 +0000 (13:14 -0700)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc:
sdhci: remove needless double parenthesis
sdhci: Specific quirk vor VIA SDHCI controller in VX855ES
s3cmci: fix dma configuration call
mmc: Add new via-sdmmc host controller driver
sdhci: Add support for hosts that are only capable of 1-bit transfers
MAINTAINERS: add myself as atmel-mci maintainer (sd/mmc interface)
sdhci: Add SDHCI_QUIRK_NO_MULTIBLOCK quirk
sdhci: Add better ADMA error reporting
sdhci-s3c: Samsung S3C based SDHCI controller glue
* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
crypto: aes-ni - Remove CRYPTO_TFM_REQ_MAY_SLEEP from fpu template
crypto: aes-ni - Do not sleep when using the FPU
crypto: aes-ni - Fix cbc mode IV saving
crypto: padlock-aes - work around Nano CPU errata in CBC mode
crypto: padlock-aes - work around Nano CPU errata in ECB mode
Linus Torvalds [Sun, 21 Jun 2009 20:13:53 +0000 (13:13 -0700)]
Merge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
lockdep: Select frame pointers on x86
dma-debug: be more careful when building reference entries
dma-debug: check for sg_call_ents in best-fit algorithm too
Move FAULT_FLAG_xyz into handle_mm_fault() callers
This allows the callers to now pass down the full set of FAULT_FLAG_xyz
flags to handle_mm_fault(). All callers have been (mechanically)
converted to the new calling convention, there's almost certainly room
for architectures to clean up their code and then add FAULT_FLAG_RETRY
when that support is added.
Remove internal use of 'write_access' in mm/memory.c
The fault handling routines really want more fine-grained flags than a
single "was it a write fault" boolean - the callers will want to set
flags like "you can return a retry error" etc.
And that's actually how the VM works internally, but right now the
top-level fault handling functions in mm/memory.c all pass just the
'write_access' boolean around.
This switches them over to pass around the FAULT_FLAG_xyzzy 'flags'
variable instead. The 'write_access' calling convention still exists
for the exported 'handle_mm_fault()' function, but that is next.
Johannes Weiner [Sat, 20 Jun 2009 00:23:29 +0000 (02:23 +0200)]
ipc: unbreak 32-bit shmctl/semctl/msgctl
31a985f "ipc: use __ARCH_WANT_IPC_PARSE_VERSION in ipc/util.h" would
choose the implementation of ipc_parse_version() based on a symbol
defined in <asm/unistd.h>.
But it failed to also include this header and thus broke
IPC_64-passing 32-bit userspace because the flag wasn't masked out
properly anymore and the command not understood.
Include <linux/unistd.h> to give the architecture a chance to ask for
the no-no-op ipc_parse_version().
Anton Vorontsov [Wed, 17 Jun 2009 20:14:08 +0000 (00:14 +0400)]
sdhci: Add support for hosts that are only capable of 1-bit transfers
Some hosts (hardware configurations, or particular SD/MMC slots) may
not support 4-bit bus. For example, on MPC8569E-MDS boards we can
switch between serial (1-bit only) and nibble (4-bit) modes, thought
we have to disable more peripherals to work in 4-bit mode.
Along with some small core changes, this patch modifies sdhci-of
driver, so that now it looks for "sdhci,1-bit-only" property in the
device-tree, and if specified we enable a proper quirk.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Acked-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Pierre Ossman <pierre@ossman.eu>
Ben Dooks [Sun, 14 Jun 2009 12:52:37 +0000 (13:52 +0100)]
sdhci-s3c: Samsung S3C based SDHCI controller glue
Add support for the 'HSMMC' block(s) in the Samsung SoC
line. These are compatible with the SDHCI driver so add
the necessary setup and driver binding for the platform
devices.
Signed-off-by: Ben Dooks <ben@simtec.co.uk> Signed-off-by: Pierre Ossman <pierre@ossman.eu>
Tony Vroon [Sat, 20 Jun 2009 23:40:10 +0000 (00:40 +0100)]
ALSA: hda - Acer Inspire 6530G model for Realtek ALC888
The selected 4930G model seemed to keep the subwoofer 'tuba'
function from operating correctly. Removing the existing PCI
ID match made this work again, but it was mapped to 'Side'
instead of to LFE as one would expect.
This attempts to enable all functionality and keep the amount
of available mixer sliders low. Any slider that had no audible
effect on the output audio has been removed, and as such EAPD
is not currently enabled.
Signed-off-by: Tony Vroon <tony@linx.net> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Peter Zijlstra [Fri, 12 Jun 2009 08:04:01 +0000 (10:04 +0200)]
lockdep: Select frame pointers on x86
x86 stack traces are a piece of crap without frame pointers, and its not
like the 'performance gain' of not having stack pointers matters when you
selected lockdep.
Reported-by: Andrew Morton <akpm@linux-foundation.org>
LKML-Reference: <new-submission> Cc: <stable@kernel.org> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Johannes Weiner [Fri, 19 Jun 2009 17:30:56 +0000 (19:30 +0200)]
mm: page_alloc: clear PG_locked before checking flags on free
da456f1 "page allocator: do not disable interrupts in free_page_mlock()" moved
the PG_mlocked clearing after the flag sanity checking which makes mlocked
pages always trigger 'bad page'. Fix this by clearing the bit up front.
Reported--and-debugged-by: Peter Chubb <peter.chubb@nicta.com.au> Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Acked-by: Mel Gorman <mel@csn.ul.ie> Tested-by: Maxim Levitsky <maximlevitsky@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Sat, 20 Jun 2009 22:40:00 +0000 (15:40 -0700)]
x86, 64-bit: Clean up user address masking
The discussion about using "access_ok()" in get_user_pages_fast() (see
commit 7f8189068726492950bf1a2dcfd9b51314560abf: "x86: don't use
'access_ok()' as a range check in get_user_pages_fast()" for details and
end result), made us notice that x86-64 was really being very sloppy
about virtual address checking.
So be way more careful and straightforward about masking x86-64 virtual
addresses:
- All the VIRTUAL_MASK* variants now cover half of the address
space, it's not like we can use the full mask on a signed
integer, and the larger mask just invites mistakes when
applying it to either half of the 48-bit address space.
- /proc/kcore's kc_offset_to_vaddr() becomes a lot more
obvious when it transforms a file offset into a
(kernel-half) virtual address.
- Unify/simplify the 32-bit and 64-bit USER_DS definition to
be based on TASK_SIZE_MAX.
This cleanup and more careful/obvious user virtual address checking also
uncovered a buglet in the x86-64 implementation of strnlen_user(): it
would do an "access_ok()" check on the whole potential area, even if the
string itself was much shorter, and thus return an error even for valid
strings. Our sloppy checking had hidden this.
So this fixes 'strnlen_user()' to do this properly, the same way we
already handled user strings in 'strncpy_from_user()'. Namely by just
checking the first byte, and then relying on fault handling for the
rest. That always works, since we impose a guard page that cannot be
mapped at the end of the user space address space (and even if we
didn't, we'd have the address space hole).
Acked-by: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Nick Piggin <npiggin@suse.de> Cc: Hugh Dickins <hugh.dickins@tiscali.co.uk> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Sat, 20 Jun 2009 18:30:01 +0000 (11:30 -0700)]
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:
genirq, irq.h: Fix kernel-doc warnings
genirq: fix comment to say IRQ_WAKE_THREAD
Linus Torvalds [Sat, 20 Jun 2009 18:29:32 +0000 (11:29 -0700)]
Merge branch 'perfcounters-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'perfcounters-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (49 commits)
perfcounter: Handle some IO return values
perf_counter: Push perf_sample_data through the swcounter code
perf_counter tools: Define and use our own u64, s64 etc. definitions
perf_counter: Close race in perf_lock_task_context()
perf_counter, x86: Improve interactions with fast-gup
perf_counter: Simplify and fix task migration counting
perf_counter tools: Add a data file header
perf_counter: Update userspace callchain sampling uses
perf_counter: Make callchain samples extensible
perf report: Filter to parent set by default
perf_counter tools: Handle lost events
perf_counter: Add event overlow handling
fs: Provide empty .set_page_dirty() aop for anon inodes
perf_counter: tools: Makefile tweaks for 64-bit powerpc
perf_counter: powerpc: Add processor back-end for MPC7450 family
perf_counter: powerpc: Make powerpc perf_counter code safe for 32-bit kernels
perf_counter: powerpc: Change how processor-specific back-ends get selected
perf_counter: powerpc: Use unsigned long for register and constraint values
perf_counter: powerpc: Enable use of software counters on 32-bit powerpc
perf_counter tools: Add and use isprint()
...
Linus Torvalds [Sat, 20 Jun 2009 17:57:40 +0000 (10:57 -0700)]
Merge branch 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
sched: Fix out of scope variable access in sched_slice()
sched: Hide runqueues from direct refer at source code level
sched: Remove unneeded __ref tag
sched, x86: Fix cpufreq + sched_clock() TSC scaling
Linus Torvalds [Sat, 20 Jun 2009 17:56:46 +0000 (10:56 -0700)]
Merge branch 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (24 commits)
tracing/urgent: warn in case of ftrace_start_up inbalance
tracing/urgent: fix unbalanced ftrace_start_up
function-graph: add stack frame test
function-graph: disable when both x86_32 and optimize for size are configured
ring-buffer: have benchmark test print to trace buffer
ring-buffer: do not grab locks in nmi
ring-buffer: add locks around rb_per_cpu_empty
ring-buffer: check for less than two in size allocation
ring-buffer: remove useless compile check for buffer_page size
ring-buffer: remove useless warn on check
ring-buffer: use BUF_PAGE_HDR_SIZE in calculating index
tracing: update sample event documentation
tracing/filters: fix race between filter setting and module unload
tracing/filters: free filter_string in destroy_preds()
ring-buffer: use commit counters for commit pointer accounting
ring-buffer: remove unused variable
ring-buffer: have benchmark test handle discarded events
ring-buffer: prevent adding write in discarded area
tracing/filters: strloc should be unsigned short
tracing/filters: operand can be negative
...
Fix up kmemcheck-induced conflict in kernel/trace/ring_buffer.c manually
Linus Torvalds [Sat, 20 Jun 2009 17:49:48 +0000 (10:49 -0700)]
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: (45 commits)
x86, mce: fix error path in mce_create_device()
x86: use zalloc_cpumask_var for mce_dev_initialized
x86: fix duplicated sysfs attribute
x86: de-assembler-ize asm/desc.h
i386: fix/simplify espfix stack switching, move it into assembly
i386: fix return to 16-bit stack from NMI handler
x86, ioapic: Don't call disconnect_bsp_APIC if no APIC present
x86: Remove duplicated #include's
x86: msr.h linux/types.h is only required for __KERNEL__
x86: nmi: Add Intel processor 0x6f4 to NMI perfctr1 workaround
x86, mce: mce_intel.c needs <asm/apic.h>
x86: apic/io_apic.c: dmar_msi_type should be static
x86, io_apic.c: Work around compiler warning
x86: mce: Don't touch THERMAL_APIC_VECTOR if no active APIC present
x86: mce: Handle banks == 0 case in K7 quirk
x86, boot: use .code16gcc instead of .code16
x86: correct the conversion of EFI memory types
x86: cap iomem_resource to addressable physical memory
x86, mce: rename _64.c files which are no longer 64-bit-specific
x86, mce: mce.h cleanup
...
Manually fix up trivial conflict in arch/x86/mm/fault.c
Linus Torvalds [Sat, 20 Jun 2009 17:17:02 +0000 (10:17 -0700)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (35 commits)
Input: add driver for Synaptics I2C touchpad
Input: synaptics - add support for reporting x/y resolution
Input: ALPS - handle touchpoints buttons correctly
Input: gpio-keys - change timer to workqueue
Input: ads7846 - pin change interrupt support
Input: add support for touchscreen on W90P910 ARM platform
Input: appletouch - improve finger detection
Input: wacom - clear Intuos4 wheel data when finger leaves proximity
Input: ucb1400 - move static function from header into core
Input: add driver for EETI touchpanels
Input: ads7846 - more detailed model name in sysfs
Input: ads7846 - support swapping x and y axes
Input: ati_remote2 - use non-atomic bitops
Input: introduce lm8323 keypad driver
Input: psmouse - ESD workaround fix for OLPC XO touchpad
Input: tsc2007 - make sure platform provides get_pendown_state()
Input: uinput - flush all pending ff effects before destroying device
Input: simplify name handling for certain input handles
Input: serio - do not use deprecated dev.power.power_state
Input: wacom - add support for Intuos4 tablets
...
Linus Torvalds [Sat, 20 Jun 2009 17:15:30 +0000 (10:15 -0700)]
Merge branch 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6
* 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: (24 commits)
agp/intel: Make intel_i965_mask_memory use dma_addr_t for physical addresses
agp: add user mapping support to ATI AGP bridge.
drm/i915: enable GEM on PAE.
drm/radeon: fix unused variables warning
agp: switch AGP to use page array instead of unsigned long array
agpgart: detected ALi M???? chipset with M1621
drm/radeon: command stream checker for r3xx-r5xx hardware
drm/radeon: Fully initialize LVDS info also when we can't get it from the ROM.
radeon: Fix CP byte order on big endian architectures with KMS.
agp/uninorth: Handle user memory types.
drm/ttm: Add some powerpc cache flush code.
radeon: Enable modesetting on non-x86.
drm/radeon: Respect AGP cant_use_aperture flag.
drm: EDID endianness fixes.
drm/radeon: this VRAM vs aperture test is wrong, just remove it.
drm/ttm: fix an error path to exit function correctly
drm: Apply "Memory fragmentation from lost alignment blocks"
ttm: Return -ERESTART when a signal interrupts bo eviction.
drm: Remove memory debugging infrastructure.
drm/i915: Clear fence register on tiling stride change.
...
Linus Torvalds [Sat, 20 Jun 2009 16:52:27 +0000 (09:52 -0700)]
x86: don't use 'access_ok()' as a range check in get_user_pages_fast()
It's really not right to use 'access_ok()', since that is meant for the
normal "get_user()" and "copy_from/to_user()" accesses, which are done
through the TLB, rather than through the page tables.
Why? access_ok() does both too few, and too many checks. Too many,
because it is meant for regular kernel accesses that will not honor the
'user' bit in the page tables, and because it honors the USER_DS vs
KERNEL_DS distinction that we shouldn't care about in GUP. And too few,
because it doesn't do the 'canonical' check on the address on x86-64,
since the TLB will do that for us.
So instead of using a function that isn't meant for this, and does
something else and much more complicated, just do the real rules: we
don't want the range to overflow, and on x86-64, we want it to be a
canonical low address (on 32-bit, all addresses are canonical).
Acked-by: Ingo Molnar <mingo@elte.hu> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Michal Simek [Sat, 20 Jun 2009 12:24:01 +0000 (14:24 +0200)]
microblaze: Add missing symbols for CONSTRUCTORS support
Commit b99b87f70c7785ab1e253c6220f4b0b57ce3a7f7 add CONSTRUCTOR
support to Linux but Microblaze not defined KERNEL_CTORS symbols
which are used with that patch.
This patch fixed it.
Arnd Bergmann [Thu, 18 Jun 2009 17:55:26 +0000 (19:55 +0200)]
microblaze: remove init_mm
Alexey removed the definition for init_mm from all architectures
but forgot microblaze, which was only recently added.
This fixes the microblaze build by dropping it there as well.
Randy Dunlap [Thu, 18 Jun 2009 00:36:15 +0000 (17:36 -0700)]
kernel-doc: ignore kmemcheck_bitfield_begin/end
Teach kernel-doc to ignore kmemcheck_bitfield_{begin,end} sugar
so that it won't generate warnings like this:
Warning(include/net/sock.h:297): No description found for parameter 'kmemcheck_bitfield_begin(flags)'
Warning(include/net/sock.h:297): No description found for parameter 'kmemcheck_bitfield_end(flags)'
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Amerigo Wang [Fri, 19 Jun 2009 07:06:54 +0000 (03:06 -0400)]
kbuild: fix build error during make htmldocs
Fix the following build error when do 'make htmldocs':
DOCPROC Documentation/DocBook/debugobjects.xml
exec /scripts/kernel-doc: No such file or directory
exec /scripts/kernel-doc: No such file or directory
Reported-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: WANG Cong <amwang@redhat.com> Acked-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Building perfcounter tools raises the following warnings:
builtin-record.c: In function ‘atexit_header’:
builtin-record.c:464: erreur: ignoring return value of ‘pwrite’, declared with attribute warn_unused_result
builtin-record.c: In function ‘__cmd_record’:
builtin-record.c:503: erreur: ignoring return value of ‘read’, declared with attribute warn_unused_result
builtin-report.c: In function ‘__cmd_report’:
builtin-report.c:1403: erreur: ignoring return value of ‘read’, declared with attribute warn_unused_result
This patch handles these IO return values.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <1245456100-5477-1-git-send-email-fweisbec@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Rainer Weikusat [Thu, 18 Jun 2009 15:04:00 +0000 (17:04 +0200)]
ide-cd: prevent null pointer deref via cdrom_newpc_intr
With 2.6.30, the error handling code in cdrom_newpc_intr was changed
to deal with partial request failures by normally completing the 'good'
parts of a request and only 'error' the last (and presumably,
incompletely transferred) bio associated with a particular
request. In order to do this, ide_complete_rq is called over
ide_cd_error_cmd() to partially complete the rq. The block layer
does partial completion only for requests with bio's and if the
rq doesn't have one (eg 'GPCMD_READ_DISC_INFO') the request is
completed as a whole and the drive->hwif->rq pointer set to NULL
afterwards. When calling ide_complete_rq again to report
the error, this null pointer is derefenced, resulting in a kernel
crash.
This fixes http://bugzilla.kernel.org/show_bug.cgi?id=13399.
Mike Rapoport [Thu, 11 Jun 2009 15:08:39 +0000 (08:08 -0700)]
Input: add driver for Synaptics I2C touchpad
This driver supports Synaptics I2C touchpad controller on eXeda
mobile device. Unfortunaltely it only works in relative mode and
thus is not comaptible with Xorg Synaptics driver.
Signed-off-by: Igor Grinberg <grinberg@compulab.co.il> Signed-off-by: Mike Rapoport <mike@compulab.co.il> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Tero Saarni [Thu, 11 Jun 2009 06:27:24 +0000 (23:27 -0700)]
Input: synaptics - add support for reporting x/y resolution
Synaptics uses anisotropic coordinate system. On some wide touchpads
vertical resolution can be twice as high as horizontal which causes
unequal sensitivity on x/y directions. Add support for reading the
resolution with EVIOCGABS ioctl.
This snapshot has been taken while neither the function tracer nor
the function graph tracer was running.
With dynamic ftrace, such results show a wrong ftrace behaviour
because all calls to ftrace_caller or ftrace_graph_caller (the patched
calls to mcount) are supposed to be patched into nop if none of those
tracers are running.
The problem occurs after the first run of the function tracer. Once we
launch it a second time, the callsites will never be nopped back,
unless you set custom filters.
For example it happens during the self tests at boot time.
The function tracer selftest runs, and then the dynamic tracing is
tested too. After that, the callsites are left un-nopped.
This is because the reset callback of the function tracer tries to
unregister two ftrace callbacks in once: the common function tracer
and the function tracer with stack backtrace, regardless of which
one is currently in use.
It then creates an unbalance on ftrace_start_up value which is expected
to be zero when the last ftrace callback is unregistered. When it
reaches zero, the FTRACE_DISABLE_CALLS is set on the next ftrace
command, triggering the patching into nop. But since it becomes
unbalanced, ie becomes lower than zero, if the kernel functions
are patched again (as in every further function tracer runs), they
won't ever be nopped back.
Note that ftrace_call and ftrace_graph_call are still patched back
to ftrace_stub in the off case, but not the callers of ftrace_call
and ftrace_graph_caller. It means that the tracing is well deactivated
but we waste a useless call into every kernel function.
This patch just unregisters the right ftrace_ops for the function
tracer on its reset callback and ignores the other one which is
not registered, fixing the unbalance. The problem also happens
is .30
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: stable@kernel.org
Linus Torvalds [Sat, 20 Jun 2009 00:45:51 +0000 (17:45 -0700)]
Merge branch 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging
* 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
i2c: New macro to initialize i2c address lists on the fly
i2c: Don't advertise i2c functions when not available
i2c: Use rwsem instead of mutex for board info
i2c: Add a sysfs interface to instantiate devices
i2c: Limit core locking to the necessary sections
i2c: Kill the redundant client list
i2c: Kill is_newstyle_driver
i2c: Merge i2c_attach_client into i2c_new_device
i2c: Drop i2c_probe function
i2c: Get rid of the legacy binding model
i2c: Kill client_register and client_unregister methods
Linus Torvalds [Sat, 20 Jun 2009 00:34:46 +0000 (17:34 -0700)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/vapier/blackfin
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/vapier/blackfin:
Blackfin: convert page/tlb to asm-generic
Blackfin: convert types to asm-generic
Blackfin: convert irq/process to asm-generic
Blackfin: convert signal/mmap to asm-generic
Blackfin: convert locking primitives to asm-generic
Blackfin: convert termios to asm-generic
Blackfin: convert simple headers to asm-generic
Blackfin: convert socket/poll to asm-generic
Blackfin: convert user/elf to asm-generic
Blackfin: convert shm/sysv/ipc to asm-generic
Blackfin: convert asm/ioctls.h to asm-generic/ioctls.h
Blackfin: only build irqpanic.c when needed
Blackfin: pull in asm/io.h in ksyms for prototypes
Blackfin: use common test_bit() rather than __test_bit()
Joe Perches [Thu, 18 Jun 2009 23:49:25 +0000 (16:49 -0700)]
MAINTAINERS: kmemtrace pattern update
Signed-off-by: Joe Perches <joe@perches.com> Cc: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> Cc: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Ingo Molnar <mingo@elte.hu> Cc: Zhao Lei <zhaolei@cn.fujitsu.com> Cc: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Joe Perches [Thu, 18 Jun 2009 23:49:23 +0000 (16:49 -0700)]
MAINTAINERS: update Ftrace documentation pattern
Signed-off-by: Joe Perches <joe@perches.com> Cc: Randy Dunlap <rdunlap@xenotime.net> Cc: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Reported-by: Werner Lemberg <wl@gnu.org> Cc: Michal Januszewski <spock@gentoo.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andrew Morton [Thu, 18 Jun 2009 23:49:17 +0000 (16:49 -0700)]
convert some DMA_nnBIT_MASK() callers
We're about to make DMA_nnBIT_MASK() emit `deprecated' warnings. Convert the
remaining stragglers which are visible to the x86_64 build.
Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Cc: Eric Moore <Eric.Moore@lsil.com> Cc: Takashi Iwai <tiwai@suse.de> Cc: "David S. Miller" <davem@davemloft.net> Cc: Alexander Duyck <alexander.h.duyck@intel.com> Cc: Yi Zou <yi.zou@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Dirk Eibach [Thu, 18 Jun 2009 23:49:15 +0000 (16:49 -0700)]
char: moxa, prevent opening unavailable ports
In moxa.c there are 32 minor numbers reserved for each device. The number
of ports actually available per device is stored in
moxa_board_conf->numPorts. This number is not considered in moxa_open().
Opening a port that is not available results in a kernel oops. This patch
adds a test to moxa_open() that prevents opening unavailable ports.
Mike Frysinger [Thu, 18 Jun 2009 23:49:14 +0000 (16:49 -0700)]
istallion: add missing __devexit marking
The remove member of the pci_driver stli_pcidriver uses __devexit_p(), so
the remove function itself should be marked with __devexit. Even more so
considering the probe function is marked with __devinit.
Signed-off-by: Mike Frysinger <vapier@gentoo.org> Acked-by: Greg Ungerer <gerg@uclinux.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Roel Kluin [Thu, 18 Jun 2009 23:49:13 +0000 (16:49 -0700)]
dtlk: off by one in {read,write}_tts()
With a postfix increment retries is incremented beyond DTLK_MAX_RETRIES so
the error message is not displayed correctly.
Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Cc: James R. Van Zandt <jrv@vanzandt.mv.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Oleg Nesterov [Thu, 18 Jun 2009 23:49:11 +0000 (16:49 -0700)]
ptrace: wait_task_zombie: do not account traced sub-threads
The bug is ancient.
If we trace the sub-thread of our natural child and this sub-thread exits,
we update parent->signal->cxxx fields. But we should not do this until
the whole thread-group exits, otherwise we account this thread (and all
other live threads) twice.
Add the task_detached() check. No need to check thread_group_empty(),
wait_consider_task()->delay_group_leader() already did this.
Signed-off-by: Oleg Nesterov <oleg@redhat.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: Roland McGrath <roland@redhat.com> Cc: Stanislaw Gruszka <sgruszka@redhat.com> Cc: Vitaly Mayatskikh <vmayatsk@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Atsushi Nemoto [Thu, 18 Jun 2009 23:49:09 +0000 (16:49 -0700)]
rtc: make rtc_update_irq callable with irqs enabled
The rtc_update_irq() might be called with irqs enabled, if a interrupt
handler was registered without IRQF_DISABLED. Use
spin_lock_irqsave/spin_unlock_irqrestore instead of spin_lock/spin_unlock.
Also update kerneldoc and drivers which do extra work to follow the
current interface spec, as suggestted by David Brownell.
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Anton Vorontsov [Thu, 18 Jun 2009 23:49:08 +0000 (16:49 -0700)]
spi_mpc8xxx: s/83xx/8xxx/g
Since we renamed the file, we might want to rename the file internals too.
Though we don't bother with changing platform driver name and platform
module alias. The stuff is legacy and hopefully we'll remove it soon.
Suggested-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Cc: David Brownell <david-b@pacbell.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Anton Vorontsov [Thu, 18 Jun 2009 23:49:08 +0000 (16:49 -0700)]
spi_mpc83xx: rename spi_83xx.c to spi_8xxx.c
The driver handles MPC83xx, MPC85xx and MPC86xx SPI controllers, so rename
the file for clarity.
Suggested-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Cc: Kumar Gala <galak@gate.crashing.org> Cc: David Brownell <david-b@pacbell.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Anton Vorontsov [Thu, 18 Jun 2009 23:49:07 +0000 (16:49 -0700)]
spi_mpc83xx: remove dead code
This patch removes #if 0'ed code, and spi_mpc83xx->busy variable that is
used by that dead snippet only.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Cc: Kumar Gala <galak@gate.crashing.org> Cc: David Brownell <david-b@pacbell.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Anton Vorontsov [Thu, 18 Jun 2009 23:49:06 +0000 (16:49 -0700)]
spi_mpc83xx: split mpc83xx_spi_work() into two routines
mpc83xx_spi_work() is quite large, with up to five indentation levels and
is quite difficult to read.
So, split the function in two parts:
1. mpc83xx_spi_work() now only traverse queued spi messages;
2. mpc83xx_spi_do_one_msg() only manages single messages.
There should be no functional changes.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Cc: Kumar Gala <galak@gate.crashing.org> Cc: David Brownell <david-b@pacbell.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Anton Vorontsov [Thu, 18 Jun 2009 23:49:05 +0000 (16:49 -0700)]
spi_mpc83xx: fix checkpatch issues
Checkpatch is spitting errors when seeing the rename patch, so fix the
errors prior to moving.
Following errors and warnings were fixed:
WARNING: Use #include <linux/io.h> instead of <asm/io.h>
#1027: FILE: drivers/spi/spi_mpc8xxx.c:37:
+#include <asm/io.h>
ERROR: "foo * bar" should be "foo *bar"
#1111: FILE: drivers/spi/spi_mpc8xxx.c:121:
+static inline void mpc83xx_spi_write_reg(__be32 __iomem * reg, u32 val)
ERROR: "foo * bar" should be "foo *bar"
#1116: FILE: drivers/spi/spi_mpc8xxx.c:126:
+static inline u32 mpc83xx_spi_read_reg(__be32 __iomem * reg)
ERROR: "foo * bar" should be "foo *bar"
#1125: FILE: drivers/spi/spi_mpc8xxx.c:135:
+ type * rx = mpc83xx_spi->rx; \
ERROR: "foo * bar" should be "foo *bar"
#1135: FILE: drivers/spi/spi_mpc8xxx.c:145:
+ const type * tx = mpc83xx_spi->tx; \
WARNING: suspect code indent for conditional statements (16, 25)
#1504: FILE: drivers/spi/spi_mpc8xxx.c:514:
+ while (((event =
[...]
+ cpu_relax();
Following warnings were left over, since fixing them will hurt the
readability. We'd better fix them by lowering the indentation level by
splitting mpc83xx_spi_work function into two parts.
WARNING: line over 80 characters
#1371: FILE: drivers/spi/spi_mpc8xxx.c:381:
+ status = mpc83xx_spi_setup_transfer(spi, t);
WARNING: line over 80 characters
#1392: FILE: drivers/spi/spi_mpc8xxx.c:402:
+ mpc83xx_spi_chipselect(spi, BITBANG_CS_INACTIVE);
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Cc: Kumar Gala <galak@gate.crashing.org> Cc: David Brownell <david-b@pacbell.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Anton Vorontsov [Thu, 18 Jun 2009 23:49:02 +0000 (16:49 -0700)]
powerpc/86xx: add MMC SPI support for MPC8610HPCD boards
This patch adds spi and mmc-spi-slot nodes, plus a gpio-controller for
PIXIS' sdcsr bank that is used for managing SPI chip-select and for
reading card's states.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Cc: Kumar Gala <galak@gate.crashing.org> Cc: David Brownell <david-b@pacbell.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Anton Vorontsov [Thu, 18 Jun 2009 23:49:01 +0000 (16:49 -0700)]
spi_mpc83xx: add small delay after asserting chip-select line
This is needed for some underlaying GPIO controllers that may be a bit
slow, or if chip-select signal need some time to stabilize.
For what it's worth, we already have the similar delay for chip-select
de-assertion case.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Cc: Kumar Gala <galak@gate.crashing.org> Cc: David Brownell <david-b@pacbell.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Anton Vorontsov [Thu, 18 Jun 2009 23:49:01 +0000 (16:49 -0700)]
spi_mpc83xx: quieten down the "Requested speed is too low" message
When a platform is running at high frequencies it's not always possible to
scale-down a frequency to a requested value, and using mmc_spi driver this
leads to the following printk flood during card polling:
...
mmc_spi spi32766.0: Requested speed is too low: 400000 Hz. Will use
520828 Hz instead.
mmc_spi spi32766.0: Requested speed is too low: 400000 Hz. Will use
520828 Hz instead.
...
Fix this by using WARN_ONCE(), it's better than the flood, and also better
than turning dev_err() into dev_dbg(), since we actually want to warn that
some things may not work correctly.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Cc: Kumar Gala <galak@gate.crashing.org> Cc: David Brownell <david-b@pacbell.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Anton Vorontsov [Thu, 18 Jun 2009 23:48:59 +0000 (16:48 -0700)]
spi_mpc83xx: handle other Freescale processors
With this patch we'll able to select spi_mpc83xx driver on the MPC86xx
platforms. Let the driver depend on FSL_SOC, so we don't have to worry
about Kconfig anymore.
Also remove the "experimental" dependency, the driver has been tested to
work on a various hardware, and surely not experimental anymore.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Cc: Kumar Gala <galak@gate.crashing.org> Cc: David Brownell <david-b@pacbell.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Baruch Siach [Thu, 18 Jun 2009 23:48:58 +0000 (16:48 -0700)]
gpio: driver for PrimeCell PL061 GPIO controller
This is a driver for the ARM PrimeCell PL061 GPIO AMBA peripheral. The
driver is implemented using the gpiolib framework.
This driver also includes support for the use of the PL061 as an interrupt
controller (secondary).
Signed-off-by: Baruch Siach <baruch@tkos.co.il> Cc: David Brownell <david-b@pacbell.net> Acked-by: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
projects / karo-tx-linux.git / log