[SCSI] ipr: add workaround for MSI interrupts on P7
This patch adds some additional logic to the interrupt service routine to fix a potential problem where an MSI interrupt does not get cleared the first time. Signed-off-by: Wayne Boyer <wayneb@linux.vnet.ibm.com> Acked-by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
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