Eric Lee / smarc-fsl-linux-kernel

15 Sep, 2010

1 commit

  • 645ef9ef1   sound: autoconvert trivial BKL users to private mutex ... Browse Code »

    The usage of the BKL in the OSS sound drivers is
    trivial, and each of them only locks against itself,
    so it can be turned into per-driver mutexes.

    This is the script that was used for the conversion:

    file=$1
    name=$2
    if grep -q lock_kernel ${file} ; then
    if grep -q 'include.*linux.mutex.h' ${file} ; then
    sed -i '/include.*/d' ${file}
    else
    sed -i 's/include.*.*$/include /g' ${file}
    fi
    sed -i ${file} \
    -e "/^#include.*linux.mutex.h/,$ {
    1,/^\(static\|int\|long\)/ {
    /^\(static\|int\|long\)/istatic DEFINE_MUTEX(${name}_mutex);

    } }" \
    -e "s/\(un\)*lock_kernel\>[ ]*()/mutex_\1lock(\&${name}_mutex)/g" \
    -e '/[ ]*cycle_kernel_lock();/d'
    else
    sed -i -e '/include.*\/d' ${file} \
    -e '/cycle_kernel_lock()/d'
    fi

    Signed-off-by: Arnd Bergmann
    Signed-off-by: Takashi Iwai

    Arnd Bergmann
     

07 Sep, 2010

1 commit

06 Aug, 2010

1 commit

26 Jul, 2010

1 commit

13 Jul, 2010

1 commit

12 Jul, 2010

1 commit

  • 90dc763fe   sound: push BKL into open functions ... Browse Code »

    This moves the lock_kernel() call from soundcore_open
    to the individual OSS device drivers, where we can deal
    with it one driver at a time if needed, or just kill
    off the drivers.

    All core components in ALSA already provide
    adequate locking in their open()-functions
    and do not require the big kernel lock, so
    there is no need to add the BKL there.

    Signed-off-by: Arnd Bergmann
    Signed-off-by: Takashi Iwai

    Arnd Bergmann
     

27 Feb, 2010

2 commits

  • 963accbc8   MIPS: Alchemy: change dbdma to accept physical memory addresses ... Browse Code »

    DMA can only be done from physical addresses; move the "virt_to_phys"
    source/destination buffer address translation from the dbdma queueing
    functions (since the hardware can only DMA to/from physical addresses)
    to their respective users.

    Signed-off-by: Manuel Lauss
    Signed-off-by: Ralf Baechle

    Manuel Lauss
     
  • ea071cc70   MIPS: Alchemy: remove dbdma compat macros ... Browse Code »

    Remove dbdma compat macros, move remaining users over to default
    queueing functions and -flags.

    (Queueing function signature has changed in order to give
    a build failure instead of silent functional changes due
    to the no longer implicitly specified DDMA_FLAGS_IE flag)

    Signed-off-by: Manuel Lauss
    Signed-off-by: Ralf Baechle

    Manuel Lauss
     

16 Mar, 2009

1 commit

  • db1dd4d37   Use f_lock to protect f_flags ... Browse Code »

    Traditionally, changes to struct file->f_flags have been done under BKL
    protection, or with no protection at all. This patch causes all f_flags
    changes after file open/creation time to be done under protection of
    f_lock. This allows the removal of some BKL usage and fixes a number of
    longstanding (if microscopic) races.

    Reviewed-by: Christoph Hellwig
    Cc: Al Viro
    Signed-off-by: Jonathan Corbet

    Jonathan Corbet
     

21 Oct, 2008

1 commit

03 May, 2007

1 commit

  • 6473d160b   PCI: Cleanup the includes of <linux/pci.h> ... Browse Code »

    I noticed that many source files include while they do
    not appear to need it. Here is an attempt to clean it all up.

    In order to find all possibly affected files, I searched for all
    files including but without any other occurence of "pci"
    or "PCI". I removed the include statement from all of these, then I
    compiled an allmodconfig kernel on both i386 and x86_64 and fixed the
    false positives manually.

    My tests covered 66% of the affected files, so there could be false
    positives remaining. Untested files are:

    arch/alpha/kernel/err_common.c
    arch/alpha/kernel/err_ev6.c
    arch/alpha/kernel/err_ev7.c
    arch/ia64/sn/kernel/huberror.c
    arch/ia64/sn/kernel/xpnet.c
    arch/m68knommu/kernel/dma.c
    arch/mips/lib/iomap.c
    arch/powerpc/platforms/pseries/ras.c
    arch/ppc/8260_io/enet.c
    arch/ppc/8260_io/fcc_enet.c
    arch/ppc/8xx_io/enet.c
    arch/ppc/syslib/ppc4xx_sgdma.c
    arch/sh64/mach-cayman/iomap.c
    arch/xtensa/kernel/xtensa_ksyms.c
    arch/xtensa/platform-iss/setup.c
    drivers/i2c/busses/i2c-at91.c
    drivers/i2c/busses/i2c-mpc.c
    drivers/media/video/saa711x.c
    drivers/misc/hdpuftrs/hdpu_cpustate.c
    drivers/misc/hdpuftrs/hdpu_nexus.c
    drivers/net/au1000_eth.c
    drivers/net/fec_8xx/fec_main.c
    drivers/net/fec_8xx/fec_mii.c
    drivers/net/fs_enet/fs_enet-main.c
    drivers/net/fs_enet/mac-fcc.c
    drivers/net/fs_enet/mac-fec.c
    drivers/net/fs_enet/mac-scc.c
    drivers/net/fs_enet/mii-bitbang.c
    drivers/net/fs_enet/mii-fec.c
    drivers/net/ibm_emac/ibm_emac_core.c
    drivers/net/lasi_82596.c
    drivers/parisc/hppb.c
    drivers/sbus/sbus.c
    drivers/video/g364fb.c
    drivers/video/platinumfb.c
    drivers/video/stifb.c
    drivers/video/valkyriefb.c
    include/asm-arm/arch-ixp4xx/dma.h
    sound/oss/au1550_ac97.c

    I would welcome test reports for these files. I am fine with removing
    the untested files from the patch if the general opinion is that these
    changes aren't safe. The tested part would still be nice to have.

    Note that this patch depends on another header fixup patch I submitted
    to LKML yesterday:
    [PATCH] scatterlist.h needs types.h
    http://lkml.org/lkml/2007/3/01/141

    Signed-off-by: Jean Delvare
    Cc: Badari Pulavarty
    Signed-off-by: Greg Kroah-Hartman

    Jean Delvare
     

13 Feb, 2007

1 commit

26 Sep, 2006

1 commit

26 Jun, 2006

2 commits

23 Jun, 2006

1 commit

26 Mar, 2006

1 commit

  • 8d3b33f67   [PATCH] Remove MODULE_PARM ... Browse Code »

    MODULE_PARM was actually breaking: recent gcc version optimize them out as
    unused. It's time to replace the last users, which are generally in the
    most unloved drivers anyway.

    Signed-off-by: Rusty Russell
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Rusty Russell
     

23 Mar, 2006

1 commit

  • 910f5d202   [PATCH] sem2mutex: sound/oss/ ... Browse Code »

    Semaphore to mutex conversion.

    The conversion was generated via scripts, and the result was validated
    automatically via a script as well.

    Signed-off-by: Ingo Molnar
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Ingo Molnar
     

01 Feb, 2006

1 commit

16 Dec, 2005

1 commit

  • 7b6666530   [PATCH] Au1550 AC'97 OSS driver spinlock fixes ... Browse Code »

    We have found some issues with Au1550 AC'97 OSS driver in 2.6
    (sound/oss/au1550_ac97.c), though it also should concern 2.4 driver
    (drivers/sound/au1550_psc.c).

    start_dac() grabs a spinlock already held by its caller, au1550_write().
    This doesn't show up with the standard UP spinlock impelmentation but when
    the different one (mutex based) is in use, a lockup happens.

    And the interrupt handlers also didn't grab the spinlock -- that's OK in
    the usual kernel but not when the IRQ handlers are threaded. So, they're
    grabbing the spinlock now (as every correct interrupt handler should do).

    Signed-off-by: Konstantin Baidarov
    Signed-off-by: Sergei Shtylyov
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Sergei Shtylylov
     

30 Oct, 2005

1 commit

17 Apr, 2005

1 commit

  • 1da177e4c   Linux-2.6.12-rc2 ... Browse Code »

    Initial git repository build. I'm not bothering with the full history,
    even though we have it. We can create a separate "historical" git
    archive of that later if we want to, and in the meantime it's about
    3.2GB when imported into git - space that would just make the early
    git days unnecessarily complicated, when we don't have a lot of good
    infrastructure for it.

    Let it rip!

    Linus Torvalds