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

set SMP link timeout value to maximum.
Signed-off-by: NXiangliang Yu <yuxiangl@marvell.com>
Signed-off-by: NJames Bottomley <JBottomley@Parallels.com>

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);

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 {