Eric Lee / smarc-fsl-linux-kernel

27 Jul, 2008

1 commit

13 Jun, 2008

1 commit

01 Feb, 2008

3 commits

  • 39516103e   [ALSA] cs4231: remove one busy wait ... Browse Code »

    This busy_wait is not needed after latest changes
    to the cs4231-lib

    Signed-off-by: Krzysztof Helt
    Signed-off-by: Takashi Iwai
    Signed-off-by: Jaroslav Kysela

    Krzysztof Helt
     
  • 9004acc70   [ALSA] Remove sound/driver.h ... Browse Code »

    This header file exists only for some hacks to adapt alsa-driver
    tree. It's useless for building in the kernel. Let's move a few
    lines in it to sound/core.h and remove it.
    With this patch, sound/driver.h isn't removed but has just a single
    compile warning to include it. This should be really killed in
    future.

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

    Takashi Iwai
     
  • 109c53f84   [ALSA] sound/isa: kill pnp_resource_change ... Browse Code »

    This removes the pnp_resource_change use from the ALSA ISAPnP drivers. In
    2.4 these were useful in providing an easy path to setting the resources,
    but in 2.6 they retain function as a layering violation only.
    This makes for a nice cleanup (-550 lines) of ALSA but moreover, ALSA is the
    only remaining user of pnp_init_resource_table(), pnp_resource_change() and
    pnp_manual_config_dev() (and, in fact, of 'struct pnp_resource_table') in
    the tree outide of drivers/pnp itself meaning it makes for more cleanup
    potential inside the PnP layer.
    Thomas Renninger acked their removal from that side, you did from the ALSA
    side (CC list just copied from that thread).
    Against current alsa-kernel HG. Many more potential cleanups in there, but
    this _only_ removes the pnp_resource_change code. Compile tested against
    current alsa-kernel HG and compile- and use-tested against 2.6.23.x (few
    offsets).
    Cc: Thomas Renninger

    Signed-off-by: Rene Herman
    Signed-off-by: Takashi Iwai
    Signed-off-by: Jaroslav Kysela

    Rene Herman
     

16 Oct, 2007

8 commits

16 May, 2007

1 commit

11 May, 2007

4 commits

05 Oct, 2006

1 commit

  • 7d12e780e   IRQ: Maintain regs pointer globally rather than passing to IRQ handlers ... Browse Code »

    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
     

13 Jul, 2006

1 commit

  • d2a5b9d45   [ALSA] Fix undefined (missing) references in ISA MIRO sound driver ... Browse Code »

    WARNING: /lib/modules/2.6.18-rc1-mm1/kernel/sound/isa/opti9xx/snd-miro.ko
    needs unknown symbol snd_cs4231_create
    WARNING: /lib/modules/2.6.18-rc1-mm1/kernel/sound/isa/opti9xx/snd-miro.ko
    needs unknown symbol snd_cs4231_pcm
    WARNING: /lib/modules/2.6.18-rc1-mm1/kernel/sound/isa/opti9xx/snd-miro.ko
    needs unknown symbol snd_cs4231_timer
    WARNING: /lib/modules/2.6.18-rc1-mm1/kernel/sound/isa/opti9xx/snd-miro.ko
    needs unknown symbol snd_cs4231_mixer
    WARNING: /lib/modules/2.6.18-rc1-mm1/kernel/fs/reiser4/reiser4.ko needs
    unknown symbol generic_file_read

    Signed-off-by: Randy Dunlap
    Signed-off-by: Takashi Iwai
    Signed-off-by: Jaroslav Kysela

    Randy Dunlap
     

03 Jul, 2006

1 commit

12 Apr, 2006

2 commits

28 Mar, 2006

1 commit

22 Mar, 2006

3 commits

25 Feb, 2006

1 commit

  • 6f595cffe   [PATCH] snd-cs4236 typo fix ... Browse Code »

    I noticed on 2.6.16-rc4 that my MPU-401 wasn't functional, due to a simple
    copy & paste error in sound/isa/cs423x/cs4236.c.

    Acked-by: Takashi Iwai
    Cc: Jaroslav Kysela
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Rene Herman
     

01 Feb, 2006

1 commit

23 Jan, 2006

1 commit

22 Jan, 2006

1 commit

03 Jan, 2006

9 commits