24 Mar, 2011
1 commit
-
Some subsystems in the x86 tree need to carry out suspend/resume and
shutdown operations with one CPU on-line and interrupts disabled and
they define sysdev classes and sysdevs or sysdev drivers for this
purpose. This leads to unnecessarily complicated code and excessive
memory usage, so switch them to using struct syscore_ops objects for
this purpose instead.Generally, there are three categories of subsystems that use
sysdevs for implementing PM operations: (1) subsystems whose
suspend/resume callbacks ignore their arguments entirely (the
majority), (2) subsystems whose suspend/resume callbacks use their
struct sys_device argument, but don't really need to do that,
because they can be implemented differently in an arguably simpler
way (io_apic.c), and (3) subsystems whose suspend/resume callbacks
use their struct sys_device argument, but the value of that argument
is always the same and could be ignored (microcode_core.c). In all
of these cases the subsystems in question may be readily converted to
using struct syscore_ops objects for power management and shutdown.Signed-off-by: Rafael J. Wysocki
Reviewed-by: Thomas Gleixner
Acked-by: Ingo Molnar
23 Mar, 2011
39 commits
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* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
ALSA: HDA: Realtek: Avoid unnecessary volume control index on Surround/Side
ASoC: Support !REGULATOR build for sgtl5000
ALSA: hda - VIA: Fix VT1708 can't build up Headphone control issue
ALSA: hda - VIA: Correct stream names for VT1818S
ALSA: hda - VIA: Fix codec type for VT1708BCE at the right timing
ALSA: hda - VIA: Fix invalid A-A path volume adjust issue
ALSA: hda - VIA: Add missing support for VT1718S in A-A path
ALSA: hda - VIA: Fix independent headphone no sound issue
ALSA: hda - VIA: Fix stereo mixer recording no sound issue
ALSA: hda - Set EAPD for Realtek ALC665
ALSA: usb - Remove trailing spaces from USB card name strings
sound: read i_size with i_size_read()
ASoC: Remove bogus check for register validity in debugfs write
ASoC: mini2440: Fix uda134x codec problem. -
A conflict between 52c50567d8ab ("mm: swap: unlock swapfile inode mutex
before closing file on bad swapfiles") and 83ef99befc32 ("sys_swapon:
remove did_down variable") caused a double unlock of the inode mutex
(once in bad_swap: before the filp_close, once at the end just before
returning).The patch which added the extra unlock cleared did_down to avoid
unlocking twice, but the other patch removed the did_down variable.To fix, set inode to NULL after the first unlock, since it will be used
after that point only for the final unlock.While checking this patch, I found a path which could unlock without
locking, in case the same inode was added as a swapfile twice. To fix,
move the setting of the inode variable further down, to just before
claim_swapfile, which will lock the inode before doing anything else.Cc: Mel Gorman
Cc: Hugh Dickins
Cc: Eric B Munson
Cc: KAMEZAWA Hiroyuki
Cc: Andrew Morton
Signed-off-by: Cesar Eduardo Barros
Signed-off-by: Linus Torvalds -
Commit 34db18a054c6 ("smp: move smp setup functions to kernel/smp.c")
causes this build error on s390 because of a missing init.h include:CC arch/s390/kernel/asm-offsets.s
In file included from /home2/heicarst/linux-2.6/arch/s390/include/asm/spinlock.h:14:0,
from include/linux/spinlock.h:87,
from include/linux/seqlock.h:29,
from include/linux/time.h:8,
from include/linux/timex.h:56,
from include/linux/sched.h:57,
from arch/s390/kernel/asm-offsets.c:10:
include/linux/smp.h:117:20: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'setup_nr_cpu_ids'
include/linux/smp.h:118:20: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'smp_init'Fix it by adding the include statement.
Signed-off-by: Heiko Carstens
Acked-by: WANG Cong
Signed-off-by: Linus Torvalds -
Similar to commit 7e59e097c09b82760bb0fe08b0fa2b704d76c3f4, this patch
avoids unnecessary volume control indices for more
Realtek auto-parsers, e g the ALC66x family, on the "Surround" and "Side"
controls.
These indices cause these volume controls to be ignored by PulseAudio and
vmaster and should be removed whenever possible.Cc: stable@kernel.org
Reported-by: Jan Losinski
Signed-off-by: David Henningsson
Signed-off-by: Takashi Iwai -
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx: (66 commits)
avr32: at32ap700x: fix typo in DMA master configuration
dmaengine/dmatest: Pass timeout via module params
dma: let IMX_DMA depend on IMX_HAVE_DMA_V1 instead of an explicit list of SoCs
fsldma: make halt behave nicely on all supported controllers
fsldma: reduce locking during descriptor cleanup
fsldma: support async_tx dependencies and automatic unmapping
fsldma: fix controller lockups
fsldma: minor codingstyle and consistency fixes
fsldma: improve link descriptor debugging
fsldma: use channel name in printk output
fsldma: move related helper functions near each other
dmatest: fix automatic buffer unmap type
drivers, pch_dma: Fix warning when CONFIG_PM=n.
dmaengine/dw_dmac fix: use readl & writel instead of __raw_readl & __raw_writel
avr32: at32ap700x: Specify DMA Flow Controller, Src and Dst msize
dw_dmac: Setting Default Burst length for transfers as 16.
dw_dmac: Allow src/dst msize & flow controller to be configured at runtime
dw_dmac: Changing type of src_master and dest_master to u8.
dw_dmac: Pass Channel Priority from platform_data
dw_dmac: Pass Channel Allocation Order from platform_data
... -
I'm not sure why the read-only data section is excluded from the report,
it seems as relevant as the other data sections (b and d).I've stripped the symbols starting with __mod_ as they can have their
names dynamically generated and thus comparison between binaries is not
possible.Signed-off-by: Jean Delvare
Cc: Andi Kleen
Acked-by: Nathan Lynch
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Instead of always creating a huge (268K) deflate_workspace with the
maximum compression parameters (windowBits=15, memLevel=8), allow the
caller to obtain a smaller workspace by specifying smaller parameter
values.For example, when capturing oops and panic reports to a medium with
limited capacity, such as NVRAM, compression may be the only way to
capture the whole report. In this case, a small workspace (24K works
fine) is a win, whether you allocate the workspace when you need it (i.e.,
during an oops or panic) or at boot time.I've verified that this patch works with all accepted values of windowBits
(positive and negative), memLevel, and compression level.Signed-off-by: Jim Keniston
Cc: Herbert Xu
Cc: David Miller
Cc: Chris Mason
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
d_alloc_name return NULL in case error, but we expect errno in
devpts_pty_new.Addresses http://bugzilla.openvz.org/show_bug.cgi?id=1758
Signed-off-by: Andrey Vagin
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The test program below will hang because io_getevents() uses
add_wait_queue_exclusive(), which means the wake_up() in io_destroy() only
wakes up one of the threads. Fix this by using wake_up_all() in the aio
code paths where we want to make sure no one gets stuck.// t.c -- compile with gcc -lpthread -laio t.c
#include
#include
#include
#includestatic const int nthr = 2;
void *getev(void *ctx)
{
struct io_event ev;
io_getevents(ctx, 1, 1, &ev, NULL);
printf("io_getevents returned\n");
return NULL;
}int main(int argc, char *argv[])
{
io_context_t ctx = 0;
pthread_t thread[nthr];
int i;io_setup(1024, &ctx);
for (i = 0; i < nthr; ++i)
pthread_create(&thread[i], NULL, getev, ctx);sleep(1);
io_destroy(ctx);
for (i = 0; i < nthr; ++i)
pthread_join(thread[i], NULL);return 0;
}Signed-off-by: Roland Dreier
Reviewed-by: Jeff Moyer
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Remove code enabled only when CONFIG_PREEMPT_RT is turned on because it is
not used in the vanilla kernel.Signed-off-by: Alexander Gordeev
Cc: john stultz
Cc: Rodolfo Giometti
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
ADFS (FileCore) storage complies with the RISC OS filetype specification
(12 bits of file type information is stored in the file load address,
rather than using a file extension). The existing driver largely ignores
this information and does not present it to the end user.It is desirable that stored filetypes be made visible to the end user to
facilitate a precise copy of data and metadata from a hard disc (or image
thereof) into a RISC OS emulator (such as RPCEmu) or to a network share
which can be accessed by real Acorn systems.This patch implements a per-mount filetype suffix option (use -o
ftsuffix=1) to present any filetype as a ,xyz hexadecimal suffix on each
file. This type suffix is compatible with that used by RISC OS systems
that access network servers using NFS client software and by RPCemu's host
filing system.Signed-off-by: Stuart Swales
Cc: Russell King
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
ADFS (FileCore) storage complies with the RISC OS timestamp specification
(40-bit centiseconds since 01 Jan 1900 00:00:00). It is desirable that
stored timestamp precision be maintained to facilitate a precise copy of
data and metadata from a hard disc (or image thereof) into a RISC OS
emulator (such as RPCEmu).This patch implements a full-precision conversion from ADFS to Unix
timestamp as the existing driver, for ease of calculation with old 32-bit
compilers, uses the common trick of shifting the 40-bits representing
centiseconds around into 32-bits representing seconds thereby losing
precision.Signed-off-by: Stuart Swales
Cc: Russell King
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Kernel crashes in fs/adfs module when accessing directories with a large
number of objects on mounted Acorn ADFS E+/F+ format discs (or images) as
the existing code writes off the end of the fixed array of struct
buffer_head pointers.Additionally, each directory access that didn't crash would leak a buffer
as nr_buffers was not adjusted correctly for E+/F+ discs (was always left
as one less than required).The patch fixes this by allocating a dynamically-sized set of struct
buffer_head pointers if necessary for the E+/F+ case (many directories
still do in fact fit in 2048 bytes) and sets the correct nr_buffers so
that all buffers are released.Addresses https://bugzilla.kernel.org/show_bug.cgi?id=26072
Tested by tar'ing the contents of my RISC PC's E+ format 20Gb HDD which
contains a number of large directories that previously crashed the kernel.Signed-off-by: Stuart Swales
Cc: Russell King
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
page-types.c doesn't supply a way to specify the debugfs path and the
original debugfs path is not usual on most machines. This patch supplies
a way to auto mount debugfs if needed.This patch is heavily inspired by tools/perf/utils/debugfs.c
[akpm@linux-foundation.org: make functions static]
[akpm@linux-foundation.org: fix debugfs_mount() signature]
Signed-off-by: Chen Gong
Reviewed-by: KOSAKI Motohiro
Reviewed-by: Wu Fengguang
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
I noticed the 'mcelog' program had no comment and then ended up "fixing"
a few more things:* reiserfsck -V does not print "reiserfsprogs" (any more?)
* is "udevinfo" still shipped? udevd certainly is
* grub2 doesn't have a 'grub' binary
* add a "# how to get the mcelog version" commentSigned-off-by: Christian Kujau
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
There is a missing case for "Chapter 3: Placing Braces and Spaces". We
often know we should not use braces where a single statement. The first
case is:if (condition)
action();Another case is:
if (condition)
do_this();
else
do_that();However, I can not find a description of the second case.
Signed-off-by: Harry Wei
Cc: Randy Dunlap
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
When CONFIG_SYSCTL=n, we get the following warning:
fs/coda/sysctl.c:18: warning: `coda_tabl' defined but not used
Fix the warning by making sure coda_table and it's callee function are in
the same context. Also clean up the code by removing extra #ifdef.[akpm@linux-foundation.org: remove unneeded stub macros]
Signed-off-by: Rakib Mullick
Cc: Jan Harkes
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Not all 64-bit systems require ISA-style DMA, so allow it to be
configurable. x86 utilizes the generic ISA DMA allocator from
kernel/dma.c, so require it only when CONFIG_ISA_DMA_API is enabled.Disabling CONFIG_ISA_DMA_API is dependent on x86_64 since those machines
do not have ISA slots and benefit the most from disabling the option (and
on CONFIG_EXPERT as required by H. Peter Anvin).When disabled, this also avoids declaring claim_dma_lock(),
release_dma_lock(), request_dma(), and free_dma() since those interfaces
will no longer be provided.Signed-off-by: David Rientjes
Cc: Ingo Molnar
Cc: "H. Peter Anvin"
Cc: Thomas Gleixner
Cc: Bjorn Helgaas
Cc: Russell King
Cc: "Luck, Tony"
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The generic floppy disk driver utilizies the interface provided by
CONFIG_ISA_DMA_API, specifically claim_dma_lock(), release_dma_lock(),
request_dma(), and free_dma(). Thus, there's a strict dependency on the
config option and the driver should only be loaded if the kernel supports
ISA-style DMA.Signed-off-by: David Rientjes
Cc: Ingo Molnar
Cc: "H. Peter Anvin"
Cc: Thomas Gleixner
Cc: Bjorn Helgaas
Cc: Russell King
Cc: "Luck, Tony"
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
8237A utilizes the interface provided by CONFIG_ISA_DMA_API, specifically
claim_dma_lock() and release_dma_lock(). Thus, there's a strict
dependency on the config option and the module should only be loaded if
the kernel supports ISA-style DMA.Signed-off-by: David Rientjes
Cc: Ingo Molnar
Cc: "H. Peter Anvin"
Cc: Thomas Gleixner
Cc: Bjorn Helgaas
Cc: Russell King
Cc: "Luck, Tony"
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
IORESOURCE_DMA cannot be assigned without utilizing the interface
provided by CONFIG_ISA_DMA_API, specifically request_dma() and
free_dma(). Thus, there's a strict dependency on the config option and
limits IORESOURCE_DMA only to architectures that support ISA-style DMA.ia64 is not one of those architectures, so pnp_check_dma() no longer
needs to be special-cased for that architecture.pnp_assign_resources() will now return -EINVAL if IORESOURCE_DMA is
attempted on such a kernel.Signed-off-by: David Rientjes
Cc: Ingo Molnar
Cc: "H. Peter Anvin"
Cc: Thomas Gleixner
Cc: Bjorn Helgaas
Cc: Russell King
Cc: "Luck, Tony"
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This is a platform driver that supports the built-in real-time clock on
Tegra SOCs.Signed-off-by: Andrew Chew
Acked-by: Alessandro Zummo
Acked-by: Wan ZongShun
Acked-by: Jon Mayo
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Don't allow everybogy to write to NVRAM.
Signed-off-by: Vasiliy Kulikov
Cc: Andy Sharp
Cc: Alessandro Zummo
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add alarm/wakeup support to rtc isl1208 driver
Signed-off-by: Ryan Mallon
Cc: Alessandro Zummo
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
There is a general move to replace bus-specific PM ops with dev_pm_ops in
order to facilitate core improvements. Do this conversion for DS1374.Signed-off-by: Mark Brown
Cc: Alessandro Zummo
Cc: john stultz
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
In do_mounts_rd() if memory cannot be allocated, return -ENOMEM.
Signed-off-by: Davidlohr Bueso
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
With GCC-4.6 we get warnings about things being 'set but not used'.
In load_elf_binary() this can happen with reloc_func_desc if ELF_PLAT_INIT
is defined, but doesn't use the reloc_func_desc argument.Quiet the warning/error by marking reloc_func_desc as __maybe_unused.
Signed-off-by: David Daney
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add a comment to ep_poll(), rename labels a bit clearly, fix a warning of
unused variable from gcc and optimize the non-blocking path a little.Hinted-by: Andrew Morton
Signed-off-by: Davide Libenzihannes@cmpxchg.org:
: The non-blocking ep_poll path optimization introduced skipping over the
: return value setup.
:
: Initialize it properly, my userspace gets upset by epoll_wait() returning
: random things.
:
: In addition, remove the reinitialization at the fetch_events label, the
: return value is garuanteed to be zero when execution reaches there.[hannes@cmpxchg.org: fix initialization]
Signed-off-by: Johannes Weiner
Cc: Shawn Bohrer
Acked-by: Davide Libenzi
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Move the event readiness check into a proper inline, and use it uniformly
inside ep_poll() code. Events in the ->ovflist are no less ready than the
ones in ->rdllist.Signed-off-by: Davide Libenzi
Cc: Shawn Bohrer
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add brackets around typecasted argument in crc32() macro.
Signed-off-by: Konstantin Khlebnikov
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Because the second and third arguments of memset have the same type, it
turns out to be really easy to mix them up.This bug comes up time after time, so checkpatch should really be checking
for it at patch submission time.Signed-off-by: Dave Jones
Cc: Steven Rostedt
Cc: Andy Whitcroft
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
If you run checkpatch against multiple patches, and one of them has a
whitespace issue which can be helped via a script (rpt_cleaners), you will
see the same NOTE over and over for all subsequent patches. It makes it
seem like those patches also have whitespace problems when in reality,
there's only one or two bad apples.So reset rpt_cleaners back to 0 after we've issued the note so that it
only shows up near the patch with the actual problems.Signed-off-by: Mike Frysinger
Cc: Andy Whitcroft
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Use resource_size().
Signed-off-by: Chris Ball
Cc: Madhusudhan Chikkature
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Signed-off-by: Chris Ball
Cc: Jarkko Lavinen
Cc: Tony Lindgren
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Analog Devices' SigmaStudio can produce firmware blobs for devices with
these DSPs embedded (like some audio codecs). Allow these device drivers
to easily parse and load them.Signed-off-by: Mike Frysinger
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
1. simple_strto*() do not contain overflow checks and crufty,
libc way to indicate failure.
2. strict_strto*() also do not have overflow checks but the name and
comments pretend they do.
3. Both families have only "long long" and "long" variants,
but users want strtou8()
4. Both "simple" and "strict" prefixes are wrong:
Simple doesn't exactly say what's so simple, strict should not exist
because conversion should be strict by default.The solution is to use "k" prefix and add convertors for more types.
Enter
kstrtoull()
kstrtoll()
kstrtoul()
kstrtol()
kstrtouint()
kstrtoint()kstrtou64()
kstrtos64()
kstrtou32()
kstrtos32()
kstrtou16()
kstrtos16()
kstrtou8()
kstrtos8()Include runtime testsuite (somewhat incomplete) as well.
strict_strto*() become deprecated, stubbed to kstrto*() and
eventually will be removed altogether.Use kstrto*() in code today!
Note: on some archs _kstrtoul() and _kstrtol() are left in tree, even if
they'll be unused at runtime. This is temporarily solution,
because I don't want to hardcode list of archs where these
functions aren't needed. Current solution with sizeof() and
__alignof__ at least always works.Signed-off-by: Alexey Dobriyan
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Signed-off-by: Kenneth Heitke
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
commit 5b2e303f6df ("[media] rc-core: convert winbond-cir") moved the
files, update the pattern.Signed-off-by: Joe Perches
Acked-by: David Härdeman
Acked-by: Mauro Carvalho Chehab
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
