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Commit 94c4fcec authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'irq-core-for-linus' of... 

Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  genirq: Force MSI irq handlers to run with interrupts disabled
parents 14e71e4f 753649db

kernel/irq/manage.c

+10 −0
Original line number Diff line number Diff line
@@ -757,6 +757,16 @@ __setup_irq(unsigned int irq, struct irq_desc *desc, struct irqaction *new) 
		if (new->flags & IRQF_ONESHOT)

			desc->status |= IRQ_ONESHOT;



		/*

		 * Force MSI interrupts to run with interrupts

		 * disabled. The multi vector cards can cause stack

		 * overflows due to nested interrupts when enough of

		 * them are directed to a core and fire at the same

		 * time.

		 */

		if (desc->msi_desc)

			new->flags |= IRQF_DISABLED;



		if (!(desc->status & IRQ_NOAUTOEN)) {

			desc->depth = 0;

			desc->status &= ~IRQ_DISABLED;