mtip32xx: fix for driver hang after a command timeout

If an I/O command times out when a PIO command is active,
MTIP_PF_EH_ACTIVE_BIT is not cleared. This results in I/O
hang in the driver. Fix is to clear this bit.

Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

drivers/block/mtip32xx/mtip32xx.c

@@ -626,12 +626,13 @@ static void mtip_timeout_function(unsigned long int data)
 		}
 	}
 
-	if (cmdto_cnt && !test_bit(MTIP_PF_IC_ACTIVE_BIT, &port->flags)) {
+	if (cmdto_cnt) {
 		print_tags(port->dd, "timed out", tagaccum, cmdto_cnt);
-
-		mtip_restart_port(port);
+		if (!test_bit(MTIP_PF_IC_ACTIVE_BIT, &port->flags)) {
+			mtip_restart_port(port);
+			wake_up_interruptible(&port->svc_wait);
+		}
 		clear_bit(MTIP_PF_EH_ACTIVE_BIT, &port->flags);
-		wake_up_interruptible(&port->svc_wait);
 	}
 
 	if (port->ic_pause_timer) {