14 Feb, 2014

2 commits


10 Oct, 2013

1 commit


13 Dec, 2010

1 commit

  • flush_scheduled_work() is deprecated and scheduled to be removed.

    * cancel[_delayed]_work() + flush_scheduled_work() ->
    cancel[_delayed]_work_sync().

    * wm8350, wm8753 and soc-core use custom code to cancel a delayed
    work, execute it immediately if it was pending and wait for its
    completion. This is equivalent to flush_delayed_work_sync(). Use
    it instead.

    Signed-off-by: Tejun Heo
    Acked-by: Mark Brown
    Signed-off-by: Takashi Iwai

    Tejun Heo
     

07 Apr, 2010

1 commit


30 Mar, 2010

1 commit

  • …it slab.h inclusion from percpu.h

    percpu.h is included by sched.h and module.h and thus ends up being
    included when building most .c files. percpu.h includes slab.h which
    in turn includes gfp.h making everything defined by the two files
    universally available and complicating inclusion dependencies.

    percpu.h -> slab.h dependency is about to be removed. Prepare for
    this change by updating users of gfp and slab facilities include those
    headers directly instead of assuming availability. As this conversion
    needs to touch large number of source files, the following script is
    used as the basis of conversion.

    http://userweb.kernel.org/~tj/misc/slabh-sweep.py

    The script does the followings.

    * Scan files for gfp and slab usages and update includes such that
    only the necessary includes are there. ie. if only gfp is used,
    gfp.h, if slab is used, slab.h.

    * When the script inserts a new include, it looks at the include
    blocks and try to put the new include such that its order conforms
    to its surrounding. It's put in the include block which contains
    core kernel includes, in the same order that the rest are ordered -
    alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
    doesn't seem to be any matching order.

    * If the script can't find a place to put a new include (mostly
    because the file doesn't have fitting include block), it prints out
    an error message indicating which .h file needs to be added to the
    file.

    The conversion was done in the following steps.

    1. The initial automatic conversion of all .c files updated slightly
    over 4000 files, deleting around 700 includes and adding ~480 gfp.h
    and ~3000 slab.h inclusions. The script emitted errors for ~400
    files.

    2. Each error was manually checked. Some didn't need the inclusion,
    some needed manual addition while adding it to implementation .h or
    embedding .c file was more appropriate for others. This step added
    inclusions to around 150 files.

    3. The script was run again and the output was compared to the edits
    from #2 to make sure no file was left behind.

    4. Several build tests were done and a couple of problems were fixed.
    e.g. lib/decompress_*.c used malloc/free() wrappers around slab
    APIs requiring slab.h to be added manually.

    5. The script was run on all .h files but without automatically
    editing them as sprinkling gfp.h and slab.h inclusions around .h
    files could easily lead to inclusion dependency hell. Most gfp.h
    inclusion directives were ignored as stuff from gfp.h was usually
    wildly available and often used in preprocessor macros. Each
    slab.h inclusion directive was examined and added manually as
    necessary.

    6. percpu.h was updated not to include slab.h.

    7. Build test were done on the following configurations and failures
    were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my
    distributed build env didn't work with gcov compiles) and a few
    more options had to be turned off depending on archs to make things
    build (like ipr on powerpc/64 which failed due to missing writeq).

    * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
    * powerpc and powerpc64 SMP allmodconfig
    * sparc and sparc64 SMP allmodconfig
    * ia64 SMP allmodconfig
    * s390 SMP allmodconfig
    * alpha SMP allmodconfig
    * um on x86_64 SMP allmodconfig

    8. percpu.h modifications were reverted so that it could be applied as
    a separate patch and serve as bisection point.

    Given the fact that I had only a couple of failures from tests on step
    6, I'm fairly confident about the coverage of this conversion patch.
    If there is a breakage, it's likely to be something in one of the arch
    headers which should be easily discoverable easily on most builds of
    the specific arch.

    Signed-off-by: Tejun Heo <tj@kernel.org>
    Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
    Cc: Ingo Molnar <mingo@redhat.com>
    Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>

    Tejun Heo
     

31 Jul, 2009

1 commit

  • Check that the result of kzalloc is not NULL before a dereference.

    The semantic match that finds this problem is as follows:
    (http://www.emn.fr/x-info/coccinelle/)

    //
    @@
    expression *x;
    identifier f;
    constant char *C;
    @@

    x = \(kmalloc\|kcalloc\|kzalloc\)(...);
    ... when != x == NULL
    when != x != NULL
    when != (x || ...)
    (
    kfree(x)
    |
    f(...,C,...,x,...)
    |
    *f(...,x,...)
    |
    *x->f
    )
    //

    Signed-off-by: Julia Lawall
    Signed-off-by: Takashi Iwai

    Julia Lawall
     

24 Mar, 2009

1 commit


16 Jan, 2009

1 commit

  • Some machines have a master amp GPIO that needs to be toggled to
    get sound output, in addition to speaker/headphone/line-out amps.
    This makes snd-aoa handle it, if present in the device tree, thus
    making snd-aoa be able to output sound on PowerMac3,6, which was
    previously handled by snd-powermac which also doesn't use the
    master amp GPIO.

    Signed-off-by: Johannes Berg
    Signed-off-by: Takashi Iwai

    Johannes Berg
     

12 Jan, 2009

1 commit


24 Oct, 2008

1 commit


13 Apr, 2007

2 commits


09 Feb, 2007

2 commits

  • create sysfs device symlinks for snd-aoa in /sys/class/sound/controlC0 This
    allows hald to recognize the device as sound device. Furthermore it allows
    the desktop user to actually access the sound device nodes. hald and
    related packages will modify the acl attributes.
    Fixes https://bugzilla.novell.com/show_bug.cgi?id=106294
    Acked-by: Johannes Berg

    Signed-off-by: Olaf Hering
    Signed-off-by: Andrew Morton
    Signed-off-by: Jaroslav Kysela

    Olaf Hering
     
  • This patch makes a few whitespace cleanups and makes i2sbus assign the new
    struct device pointer in struct snd_pcm so that the proper device symlink
    shows up in sysfs.

    Signed-off-by: Johannes Berg
    Signed-off-by: Takashi Iwai
    Signed-off-by: Jaroslav Kysela

    Johannes Berg
     

22 Nov, 2006

1 commit


05 Oct, 2006

1 commit

  • Maintain a per-CPU global "struct pt_regs *" variable which can be used instead
    of passing regs around manually through all ~1800 interrupt handlers in the
    Linux kernel.

    The regs pointer is used in few places, but it potentially costs both stack
    space and code to pass it around. On the FRV arch, removing the regs parameter
    from all the genirq function results in a 20% speed up of the IRQ exit path
    (ie: from leaving timer_interrupt() to leaving do_IRQ()).

    Where appropriate, an arch may override the generic storage facility and do
    something different with the variable. On FRV, for instance, the address is
    maintained in GR28 at all times inside the kernel as part of general exception
    handling.

    Having looked over the code, it appears that the parameter may be handed down
    through up to twenty or so layers of functions. Consider a USB character
    device attached to a USB hub, attached to a USB controller that posts its
    interrupts through a cascaded auxiliary interrupt controller. A character
    device driver may want to pass regs to the sysrq handler through the input
    layer which adds another few layers of parameter passing.

    I've build this code with allyesconfig for x86_64 and i386. I've runtested the
    main part of the code on FRV and i386, though I can't test most of the drivers.
    I've also done partial conversion for powerpc and MIPS - these at least compile
    with minimal configurations.

    This will affect all archs. Mostly the changes should be relatively easy.
    Take do_IRQ(), store the regs pointer at the beginning, saving the old one:

    struct pt_regs *old_regs = set_irq_regs(regs);

    And put the old one back at the end:

    set_irq_regs(old_regs);

    Don't pass regs through to generic_handle_irq() or __do_IRQ().

    In timer_interrupt(), this sort of change will be necessary:

    - update_process_times(user_mode(regs));
    - profile_tick(CPU_PROFILING, regs);
    + update_process_times(user_mode(get_irq_regs()));
    + profile_tick(CPU_PROFILING);

    I'd like to move update_process_times()'s use of get_irq_regs() into itself,
    except that i386, alone of the archs, uses something other than user_mode().

    Some notes on the interrupt handling in the drivers:

    (*) input_dev() is now gone entirely. The regs pointer is no longer stored in
    the input_dev struct.

    (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking. It does
    something different depending on whether it's been supplied with a regs
    pointer or not.

    (*) Various IRQ handler function pointers have been moved to type
    irq_handler_t.

    Signed-Off-By: David Howells
    (cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)

    David Howells
     

08 Aug, 2006

1 commit


03 Aug, 2006

2 commits

  • Sometimes we simply want to turn off or on everything, and when recently a
    warning was added when a certain platform function can't be called, this
    triggered all the time in those cases. This patch shows the warning only if
    the error was different from the function not existing.
    The alternative would be to not even try calling the function when it
    doesn't exist by first checking which exist and then only calling those that
    do, but that adds complexity that isn't necessary.

    Signed-off-by: Johannes Berg
    Signed-off-by: Takashi Iwai
    Signed-off-by: Jaroslav Kysela

    Johannes Berg
     
  • The IRQ rework caused some hiccups here, in some cases we call
    get_irq without a device node. This patch makes it catch that
    case and return NO_IRQ when it happens, along with changing the
    place where the irq is checked to check for NO_IRQ instead of -1.
    Acked-by: Benjamin Herrenschmidt

    Signed-off-by: Johannes Berg
    Signed-off-by: Takashi Iwai
    Signed-off-by: Jaroslav Kysela

    Johannes Berg
     

01 Aug, 2006

1 commit


31 Jul, 2006

1 commit


11 Jul, 2006

1 commit


03 Jul, 2006

1 commit

  • This adds the new irq remapper core and removes the old one. Because
    there are some fundamental conflicts with the old code, like the value
    of NO_IRQ which I'm now setting to 0 (as per discussions with Linus),
    etc..., this commit also changes the relevant platform and driver code
    over to use the new remapper (so as not to cause difficulties later
    in bisecting).

    This patch removes the old pre-parsing of the open firmware interrupt
    tree along with all the bogus assumptions it made to try to renumber
    interrupts according to the platform. This is all to be handled by the
    new code now.

    For the pSeries XICS interrupt controller, a single remapper host is
    created for the whole machine regardless of how many interrupt
    presentation and source controllers are found, and it's set to match
    any device node that isn't a 8259. That works fine on pSeries and
    avoids having to deal with some of the complexities of split source
    controllers vs. presentation controllers in the pSeries device trees.

    The powerpc i8259 PIC driver now always requests the legacy interrupt
    range. It also has the feature of being able to match any device node
    (including NULL) if passed no device node as an input. That will help
    porting over platforms with broken device-trees like Pegasos who don't
    have a proper interrupt tree.

    Signed-off-by: Benjamin Herrenschmidt
    Signed-off-by: Paul Mackerras

    Benjamin Herrenschmidt
     

29 Jun, 2006

1 commit

  • Apparently some firmware versions forget enabling the dual-edge bit,
    snd-powermac did that too and even OSX does sometimes. This should fix
    headphone plug detection on those machines.

    Signed-off-by: Johannes Berg
    Signed-off-by: Takashi Iwai
    Signed-off-by: Jaroslav Kysela

    Johannes Berg
     

23 Jun, 2006

1 commit

  • This large patch adds all of snd-aoa.
    Consisting of many modules, it currently replaces snd-powermac
    for all layout-id based machines and handles many more (for
    example new powerbooks and powermacs with digital output that
    previously couldn't be used at all).
    It also has support for all layout-IDs that Apple has (judging
    from their Info.plist file) but not all are tested.
    The driver currently has 2 known regressions over snd-powermac:
    * it doesn't handle powermac 7,2 and 7,3
    * it doesn't have a DRC control on snapper-based machines
    I will fix those during the 2.6.18 development cycle.

    Signed-off-by: Johannes Berg
    Signed-off-by: Takashi Iwai

    Johannes Berg