uml: fix spurious IRQ testing

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The spurious IRQ testing in request_irq is mishandled in um_request_irq, which
sets the incoming file descriptors non-blocking only after request_irq
succeeds.  This results in the spurious irq calling read on a blocking
descriptor, and a hang.

Fixed by reversing the O_NONBLOCK setting and the request_irq call.

Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

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Jeff Dike 2007-11-14 17:00:23 -08:00 • committed by Linus Torvalds

parent 7c06a8dc64

commit 9ac625a398

1 changed files with 7 additions and 6 deletions

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arch/um/kernel/irq.c

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