[SCSI] ibmvfc: Fix dropped interrupts

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This patch fixes a problem of possible dropped interrupts. Currently,
the ibmvfc driver has a race condition where after ibmvfc_interrupt
gets run, the platform code clears the interrupt. This can result in
lost interrupts and, in worst case scenarios, result in command
timeouts. Fix this by implementing a tasklet similar to what the
ibmvscsi driver does so that interrupt processing is no longer done in
the actual interrupt handler, which eliminates the race.

Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

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Brian King 2009-03-20 15:44:35 -05:00 • committed by James Bottomley

parent 8fe74cf053

commit 039a08981a

2 changed files with 24 additions and 2 deletions

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25

drivers/scsi/ibmvscsi/ibmvfc.c

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1

drivers/scsi/ibmvscsi/ibmvfc.h

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