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On Wed, 2006-12-13 at 23:56 +0000, Alan wrote: > On Wed, 13 Dec 2006 23:30:55 +0100 > Thomas Gleixner <tglx@linutronix.de> wrote: > > - IRQ happens > > - kernel handler runs and masks the chip irq, which removes the IRQ > > request > > IRQ is shared with the disk driver, box dead. Err ? IRQ happens IRQ is disabled by the generic handling code Handler is invoked and checks, whether the irq is from the device or not. - If not, it returns IRQ_NONE, so the next driver (e.g. disk) is invoked. - If yes, it masks the chip on the device, which disables the chip interrupt line and returns IRQ_HANDLED. In both cases the IRQ gets reenabled from the generic irq handling code on return, so why is the box dead ? tglx - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||
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