Eric Lee / smarc-fsl-linux-kernel

07 Dec, 2012

1 commit

25 Jul, 2012

1 commit

  • bc733d495   ALSA: mpu401: Fix missing initialization of irq field ... Browse Code »

    The irq field of struct snd_mpu401 is supposed to be initialized to -1.
    Since it's set to zero as of now, a probing error before the irq
    installation results in a kernel warning "Trying to free already-free
    IRQ 0".

    Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=44821
    Cc:
    Signed-off-by: Takashi Iwai

    Takashi Iwai
     

02 Jul, 2012

1 commit

19 Dec, 2011

1 commit

  • a67ff6a54   ALSA: module_param: make bool parameters really bool ... Browse Code »

    module_param(bool) used to counter-intuitively take an int. In
    fddd5201 (mid-2009) we allowed bool or int/unsigned int using a messy
    trick.

    It's time to remove the int/unsigned int option. For this version
    it'll simply give a warning, but it'll break next kernel version.

    Signed-off-by: Rusty Russell
    Signed-off-by: Takashi Iwai

    Rusty Russell
     

01 Nov, 2011

2 commits

22 Sep, 2011

1 commit

  • 88e24c3a4   sound: irq: Remove IRQF_DISABLED ... Browse Code »

    Since commit [e58aa3d2: genirq: Run irq handlers with interrupts disabled],
    We run all interrupt handlers with interrupts disabled
    and we even check and yell when an interrupt handler
    returns with interrupts enabled (see commit [b738a50a:
    genirq: Warn when handler enables interrupts]).

    So now this flag is a NOOP and can be removed.

    Signed-off-by: Yong Zhang
    Acked-by: Peter Ujfalusi
    Acked-by: Mark Brown
    Signed-off-by: Takashi Iwai

    Yong Zhang
     

14 Sep, 2011

1 commit

  • dba8b4699   ALSA: mpu401: clean up interrupt specification ... Browse Code »

    The semantics of snd_mpu401_uart_new()'s interrupt parameters are
    somewhat counterintuitive: To prevent the function from allocating its
    own interrupt, either the irq number must be invalid, or the irq_flags
    parameter must be zero. At the same time, the irq parameter being
    invalid specifies that the mpu401 code has to work without an interrupt
    allocated by the caller. This implies that, if there is an interrupt
    and it is allocated by the caller, the irq parameter must be set to
    a valid-looking number which then isn't actually used.

    With the removal of IRQF_DISABLED, zero becomes a valid irq_flags value,
    which forces us to handle the parameters differently.

    This patch introduces a new flag MPU401_INFO_IRQ_HOOK for when the
    device interrupt is handled by the caller, and makes the allocation of
    the interrupt to depend only on the irq parameter. As suggested by
    Takashi, the irq_flags parameter was dropped because, when used, it had
    the constant value IRQF_DISABLED.

    Signed-off-by: Clemens Ladisch
    Signed-off-by: Takashi Iwai

    Clemens Ladisch
     

12 Jan, 2009

1 commit

30 Apr, 2008

1 commit

24 Apr, 2008

2 commits

01 Feb, 2008

1 commit

  • 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
     

20 Nov, 2007

1 commit

16 Oct, 2007

3 commits

20 Jul, 2007

1 commit

  • c12aad6ef   [ALSA] more section mismatches ... Browse Code »

    Something about __init_or_module isn't working as expected (?).
    CONFIG_HOTPLUG=y
    CONFIG_MODULES=n
    Fix shared init/exit code helper:
    WARNING: sound/built-in.o(.exit.text+0x243): Section mismatch: reference to .init.text: (between 'alsa_card_mpu401_exit' and 'ac97_bus_exit')
    WARNING: sound/built-in.o(.exit.text+0x21b): Section mismatch: reference to .init.text: (between 'alsa_card_dummy_exit' and 'alsa_card_serial_exit')

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

    Randy Dunlap
     

11 May, 2007

1 commit

  • 8f7ba051d   [ALSA] mpu401 - Add MPU401_INFO_UART_ONLY bitflag ... Browse Code »

    Added MPU401_INFO_UART_ONLY bitflag to avoid issueing UART_ENTER command
    at opening streams. Some devices support only UART mode and give errors
    to UART_ENTER.
    A new module option, uart_enter, is added to snd-mpu401 driver.
    For UART-only devices, set uart_enter=0.

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

    Takashi Iwai
     

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
     

23 Sep, 2006

1 commit

03 Jul, 2006

1 commit

28 Jun, 2006

1 commit

23 Jun, 2006

3 commits

22 May, 2006

1 commit

  • fad43488b   [PATCH] mpu401 section fix ... Browse Code »

    WARNING: sound/drivers/mpu401/snd-mpu401.o - Section mismatch: reference to .init.text: from .text between 'snd_mpu401_pnp_probe' (at offset 0x1f7) and 'snd_mpu401_pnp_remove'

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

    Andrew Morton
     

28 Apr, 2006

1 commit

  • a182ee987   [ALSA] continue on IS_ERR from platform device registration ... Browse Code »

    I previously only concerned myself with sound/isa. When I now checked
    for more platform_device_register_simple() usages in ALSA I found a
    couple more drivers that needed the same patches as already submitted
    for all the ISA drivers.
    This first one is the continue-on-iserr patch for sound/drivers. This
    gets them all.

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

    Rene Herman
     

20 Apr, 2006

1 commit

  • 962f831f6   [PATCH] sound: fix hang in mpu401_uart.c ... Browse Code »

    This fixes a hang in mpu401_uart.c that can occur when the mpu401 interface
    is non-existent or otherwise doesn't respond to commands but we issue IO
    anyway. snd_mpu401_uart_cmd now returns an error code that is passed up
    the stack so that an open() will fail immediately in such cases.

    Eventually discovered after wine/cxoffice would constantly cause hard
    lockups on my desktop immediately after loading (emulating Windows too
    well). Turned out that I'd recently moved my sound cards around and using
    /dev/sequencer now talks to a sound card with a broken MPU.

    This second version changes -EFAULT to -EIO and frees open resources on
    error too. Test booted and seems to work ok.

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

    Jon Masters
     

28 Mar, 2006

1 commit

  • f301ae6a6   [PATCH] pnp: mpu401: adjust pnp_register_driver signature ... Browse Code »

    This series of patches removes the assumption that pnp_register_driver()
    returns the number of devices claimed. Returning the count is unreliable
    because devices may be hot-plugged in the future. (Many devices don't support
    hot-plug, of course, but PNP in general does.)

    This changes the convention to "zero for success, or a negative error value,"
    which matches pci_register_driver(), acpi_bus_register_driver(), and
    platform_driver_register().

    If drivers need to know the number of devices, they can count calls to their
    .probe() methods.

    This patch:

    Remove the assumption that pnp_register_driver() returns the number of devices
    claimed.

    Signed-off-by: Bjorn Helgaas
    Cc: Adam Belay
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Bjorn Helgaas
     

22 Mar, 2006

1 commit

03 Jan, 2006

5 commits

04 Nov, 2005

1 commit

12 Sep, 2005

2 commits

  • 561b220a4   [ALSA] Replace with kzalloc() - others ... Browse Code »

    Documentation,SA11xx UDA1341 driver,Generic drivers,MPU401 UART,OPL3
    OPL4,Digigram VX core,I2C cs8427,I2C lib core,I2C tea6330t,L3 drivers
    AK4114 receiver,AK4117 receiver,PDAudioCF driver,PPC PMAC driver
    SPARC AMD7930 driver,SPARC cs4231 driver,Synth,Common EMU synth
    USB generic driver,USB USX2Y
    Replace kcalloc(1,..) with kzalloc().

    Signed-off-by: Takashi Iwai

    Takashi Iwai
     
  • 16dab54b8   [ALSA] Add snd_card_set_generic_dev() call ... Browse Code »

    ARM,SA11xx UDA1341 driver,Generic drivers,MPU401 UART,MIPS
    MIPS AU1x00 driver,PPC,PPC PowerMac driver,SPARC,SPARC AMD7930 driver
    SPARC cs4231 driver,SPARC DBRI driver
    - Added snd_card_set_generic_dev() call.
    - Added SND_GENERIC_DRIVER to Kconfig.
    - Clean up the error path in probe if necessary.

    Signed-off-by: Takashi Iwai

    Takashi Iwai
     

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