[SCSI] mvsas: fixed SMP request watchdog timeout issue.

set SMP link timeout value to maximum.

Signed-off-by: Xiangliang Yu <yuxiangl@marvell.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

2 files changed, 5 insertions, 0 deletions

diff --git a/drivers/scsi/mvsas/mv_94xx.c b/drivers/scsi/mvsas/mv_94xx.c
index 130d8036a2b5..7e423e5ad5e1 100644
--- a/drivers/scsi/mvsas/mv_94xx.c
+++ b/drivers/scsi/mvsas/mv_94xx.c
@@ -510,6 +510,10 @@ static int __devinit mvs_94xx_init(struct mvs_info *mvi)
         tmp |= CINT_PHY_MASK;
         mw32(MVS_INT_MASK, tmp);
 
+        tmp = mvs_cr32(mvi, CMD_LINK_TIMER);
+        tmp |= 0xFFFF0000;
+        mvs_cw32(mvi, CMD_LINK_TIMER, tmp);
+
         /* tune STP performance */
         tmp = 0x003F003F;
         mvs_cw32(mvi, CMD_PL_TIMER, tmp);
diff --git a/drivers/scsi/mvsas/mv_defs.h b/drivers/scsi/mvsas/mv_defs.h
index 8e21482367d2..f5451940d289 100644
--- a/drivers/scsi/mvsas/mv_defs.h
+++ b/drivers/scsi/mvsas/mv_defs.h
@@ -388,6 +388,7 @@ enum sas_cmd_port_registers {
         CMD_SL_MODE1            = 0x1C0, /* SL Mode 1 */
         CMD_PND_FIFO_CTL1       = 0x1C4, /* Pending FIFO Control 1 */
         CMD_PORT_LAYER_TIMER1   = 0x1E0, /* Port Layer Timer 1 */
+        CMD_LINK_TIMER          = 0x1E4, /* Link Timer */
 };
 
 enum mvs_info_flags {