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[SCSI] qla2xxx: Resolve a performance issue in interrupt
authorAnirban Chakraborty <anirban.chakraborty@qlogic.com>
Wed, 10 Jun 2009 20:55:11 +0000 (13:55 -0700)
committerJames Bottomley <James.Bottomley@HansenPartnership.com>
Mon, 15 Jun 2009 15:09:32 +0000 (10:09 -0500)
Reverted back a change in qla*_intr_handler code that caused an increase in
cpu cycles by allowing interrupts to occur while the instance hardware lock
was being held.  Fix by taking the lock in irqsave mode.

Reported-and-tested-by: Douglas W. Styner <douglas.w.styner@intel.com>
Signed-off-by: Anirban Chakraborty <anirban.chakraborty@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

No differences found
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