Eric Lee / smarc-fsl-linux-kernel

03 Jun, 2011

1 commit

  • 3a43e05f4   irq: Handle spurios irq detection for threaded irqs ... Browse Code »

    The detection of spurios interrupts is currently limited to first level
    handler. In force-threaded mode we never notice if the threaded irq does
    not feel responsible.
    This patch catches the return value of the threaded handler and forwards
    it to the spurious detector. If the primary handler returns only
    IRQ_WAKE_THREAD then the spourious detector ignores it because it gets
    called again from the threaded handler.

    [ tglx: Report the erroneous return value early and bail out ]

    Signed-off-by: Sebastian Andrzej Siewior
    Link: http://lkml.kernel.org/r/1306824972-27067-2-git-send-email-sebastian@breakpoint.cc
    Signed-off-by: Thomas Gleixner

    Sebastian Andrzej Siewior
     

24 Mar, 2009

1 commit

  • 3aa551c9b   genirq: add threaded interrupt handler support ... Browse Code »

    Add support for threaded interrupt handlers:

    A device driver can request that its main interrupt handler runs in a
    thread. To achive this the device driver requests the interrupt with
    request_threaded_irq() and provides additionally to the handler a
    thread function. The handler function is called in hard interrupt
    context and needs to check whether the interrupt originated from the
    device. If the interrupt originated from the device then the handler
    can either return IRQ_HANDLED or IRQ_WAKE_THREAD. IRQ_HANDLED is
    returned when no further action is required. IRQ_WAKE_THREAD causes
    the genirq code to invoke the threaded (main) handler. When
    IRQ_WAKE_THREAD is returned handler must have disabled the interrupt
    on the device level. This is mandatory for shared interrupt handlers,
    but we need to do it as well for obscure x86 hardware where disabling
    an interrupt on the IO_APIC level redirects the interrupt to the
    legacy PIC interrupt lines.

    Signed-off-by: Thomas Gleixner
    Reviewed-by: Ingo Molnar

    Thomas Gleixner
     

13 Mar, 2009

1 commit

23 Jun, 2006

1 commit

  • 908dcecda   [PATCH] adjust handle_IRR_event() return type ... Browse Code »

    Correct the return type of handle_IRQ_event() (inconsistency noticed during
    Xen development), and remove redundant declarations. The return type
    adjustment required breaking out the definition of irqreturn_t into a
    separate header, in order to satisfy current include order dependencies.

    Signed-off-by: Jan Beulich

    Cc: Richard Henderson
    Cc: Ivan Kokshaysky
    Cc: Russell King
    Cc: Ian Molton
    Cc: Mikael Starvik
    Cc: Yoshinori Sato
    Cc: Hirokazu Takata
    Cc: Heiko Carstens
    Cc: Martin Schwidefsky
    Cc: William Lee Irwin III
    Cc: "David S. Miller"
    Cc: Miles Bader
    Cc: Geert Uytterhoeven
    Cc: Roman Zippel
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Jan Beulich