Eric Lee / smarc-fsl-linux-kernel

20 Dec, 2006

1 commit

  • 437a5a460   [ALSA] Remove IRQF_DISABLED for shared PCI irqs ... Browse Code »

    Fix IRQ flags for PCI devices.
    The shared IRQs for PCI devices shouldn't be allocated with
    IRQF_DISABLED. Also, when MSI is enabled, IRQF_SHARED shouldn't
    be used.
    The patch removes unnecessary cast in request_irq and free_irq,
    too.

    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
     

13 Jul, 2006

1 commit

03 Jul, 2006

1 commit

23 Jun, 2006

1 commit

28 Apr, 2006

2 commits

29 Mar, 2006

1 commit

22 Mar, 2006

1 commit

04 Jan, 2006

1 commit

03 Jan, 2006

2 commits

11 Nov, 2005

1 commit

04 Nov, 2005

1 commit

12 Sep, 2005

3 commits

  • 3bcd4649b   [ALSA] set owner field in struct pci_driver ... Browse Code »

    AD1889 driver,ALS4000 driver,ATIIXP driver,ATIIXP-modem driver
    AZT3328 driver,BT87x driver,CMIPCI driver,CS4281 driver
    ENS1370/1+ driver,ES1938 driver,ES1968 driver,FM801 driver
    Intel8x0 driver,Intel8x0-modem driver,Maestro3 driver,RME32 driver
    RME96 driver,SonicVibes driver,VIA82xx driver,VIA82xx-modem driver
    ALI5451 driver,au88x0 driver,CS46xx driver,EMU10K1/EMU10K2 driver
    HDA Intel driver,ICE1712 driver,ICE1724 driver,KORG1212 driver
    MIXART driver,NM256 driver,RME HDSP driver,RME9652 driver
    Trident driver,Digigram VX222 driver,YMFPCI driver
    Set the module owner field in each driver's struct pci_driver to get
    the driver symlink in the sysfs device directory.

    Signed-off-by: Clemens Ladisch

    Clemens Ladisch
     
  • e560d8d83   [ALSA] Replace with kzalloc() - pci stuff ... Browse Code »

    AD1889 driver,ATIIXP driver,ATIIXP-modem driver,AZT3328 driver
    BT87x driver,CMIPCI driver,CS4281 driver,ENS1370/1+ driver
    ES1938 driver,ES1968 driver,FM801 driver,Intel8x0 driver
    Intel8x0-modem driver,Maestro3 driver,SonicVibes driver,VIA82xx driver
    VIA82xx-modem driver,AC97 Codec,AK4531 codec,au88x0 driver
    CA0106 driver,CS46xx driver,EMU10K1/EMU10K2 driver,HDA Codec driver
    HDA generic driver,HDA Intel driver,ICE1712 driver,ICE1724 driver
    KORG1212 driver,MIXART driver,NM256 driver,Trident driver,YMFPCI driver
    Replace kcalloc(1,..) with kzalloc().

    Signed-off-by: Takashi Iwai

    Takashi Iwai
     
  • 12bb5b78e   [ALSA] ad1889: add AD1889 driver ... Browse Code »

    PCI drivers,AD1889 driver
    move the AD1889 driver to the kernel tree

    Acked-by: Thibaut Varene
    Acked-by: Kyle McMartin

    Signed-off-by: Clemens Ladisch

    Clemens Ladisch