[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>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/scsi/ipr.h b/drivers/scsi/ipr.h
index 163245a1c3e5..19bbcf39f0c9 100644
--- a/drivers/scsi/ipr.h
+++ b/drivers/scsi/ipr.h
@@ -144,6 +144,7 @@
 #define IPR_IOA_MAX_SECTORS                             32767
 #define IPR_VSET_MAX_SECTORS                            512
 #define IPR_MAX_CDB_LEN                                 16
+#define IPR_MAX_HRRQ_RETRIES                            3
 
 #define IPR_DEFAULT_BUS_WIDTH                           16
 #define IPR_80MBs_SCSI_RATE             ((80 * 10) / (IPR_DEFAULT_BUS_WIDTH / 8))