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authorMatthew Wilcox <matthew@wil.cx>2008-11-20 14:09:33 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-11-20 13:17:40 -0800
commit0ca4b6b00113b064c080d26d803d0d7c80fb5dc8 (patch)
tree69e25f61bf252f2db0c0d01244555f90ad48aaf1 /drivers
parent23918b03060f6e572168fdde1798a905679d2e06 (diff)
x86: Fix interrupt leak due to migration
When we migrate an interrupt from one CPU to another, we set the move_in_progress flag and clean up the vectors later once they're not being used. If you're unlucky and call destroy_irq() before the vectors become un-used, the move_in_progress flag is never cleared, which causes the interrupt to become unusable. This was discovered by Jesse Brandeburg for whom it manifested as an MSI-X device refusing to use MSI-X mode when the driver was unloaded and reloaded repeatedly. Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers')
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