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A single fix for a potential deadlock when printing a message about spurious interrupts.

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Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'x86-urgent-2020-08-02' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 fix from Ingo Molnar:
 "A single fix for a potential deadlock when printing a message about
  spurious interrupts"

* tag 'x86-urgent-2020-08-02' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/i8259: Use printk_deferred() to prevent deadlock
This commit is contained in:
Linus Torvalds 2020-08-02 13:10:42 -07:00
commit 5a30a78924
1 changed files with 1 additions and 1 deletions
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2
arch/x86/kernel/i8259.c
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@ -207,7 +207,7 @@ spurious_8259A_irq:
* lets ACK and report it. [once per IRQ]
*/
if (!(spurious_irq_mask & irqmask)) {
printk(KERN_DEBUG
printk_deferred(KERN_DEBUG
"spurious 8259A interrupt: IRQ%d.\n", irq);
spurious_irq_mask |= irqmask;
}