4 files changed, 38 insertions, 10 deletions

diff --git a/drivers/s390/cio/chsc.c b/drivers/s390/cio/chsc.c
index 0689fcf23a1..75c3f1f8fd4 100644
--- a/drivers/s390/cio/chsc.c
+++ b/drivers/s390/cio/chsc.c
@@ -326,6 +326,36 @@ static void chsc_process_sei_res_acc(struct chsc_sei_area *sei_area)
 	s390_process_res_acc(&link);
 }
 
+static void chsc_process_sei_chp_avail(struct chsc_sei_area *sei_area)
+{
+	struct channel_path *chp;
+	struct chp_id chpid;
+	u8 *data;
+	int num;
+
+	CIO_CRW_EVENT(4, "chsc: channel path availability information\n");
+	if (sei_area->rs != 0)
+		return;
+	data = sei_area->ccdf;
+	chp_id_init(&chpid);
+	for (num = 0; num <= __MAX_CHPID; num++) {
+		if (!chp_test_bit(data, num))
+			continue;
+		chpid.id = num;
+
+		CIO_CRW_EVENT(4, "Update information for channel path "
+			      "%x.%02x\n", chpid.cssid, chpid.id);
+		chp = chpid_to_chp(chpid);
+		if (!chp) {
+			chp_new(chpid);
+			continue;
+		}
+		mutex_lock(&chp->lock);
+		chsc_determine_base_channel_path_desc(chpid, &chp->desc);
+		mutex_unlock(&chp->lock);
+	}
+}
+
 struct chp_config_data {
 	u8 map[32];
 	u8 op;
@@ -376,9 +406,12 @@ static void chsc_process_sei(struct chsc_sei_area *sei_area)
 	case 1: /* link incident*/
 		chsc_process_sei_link_incident(sei_area);
 		break;
-	case 2: /* i/o resource accessibiliy */
+	case 2: /* i/o resource accessibility */
 		chsc_process_sei_res_acc(sei_area);
 		break;
+	case 7: /* channel-path-availability information */
+		chsc_process_sei_chp_avail(sei_area);
+		break;
 	case 8: /* channel-path-configuration notification */
 		chsc_process_sei_chp_config(sei_area);
 		break;
diff --git a/drivers/s390/cio/device_fsm.c b/drivers/s390/cio/device_fsm.c
index 6084103672b..52c233fa2b1 100644
--- a/drivers/s390/cio/device_fsm.c
+++ b/drivers/s390/cio/device_fsm.c
@@ -408,9 +408,10 @@ ccw_device_done(struct ccw_device *cdev, int state)
 		CIO_MSG_EVENT(0, "Disconnected device %04x on subchannel "
 			      "%04x\n", cdev->private->dev_id.devno,
 			      sch->schid.sch_no);
-		if (ccw_device_notify(cdev, CIO_NO_PATH) != NOTIFY_OK)
+		if (ccw_device_notify(cdev, CIO_NO_PATH) != NOTIFY_OK) {
+			cdev->private->state = DEV_STATE_NOT_OPER;
 			ccw_device_sched_todo(cdev, CDEV_TODO_UNREG);
-		else
+		} else
 			ccw_device_set_disconnected(cdev);
 		cdev->private->flags.donotify = 0;
 		break;
@@ -840,9 +841,6 @@ call_handler:
 static void
 ccw_device_killing_irq(struct ccw_device *cdev, enum dev_event dev_event)
 {
-	struct subchannel *sch;
-
-	sch = to_subchannel(cdev->dev.parent);
 	ccw_device_set_timeout(cdev, 0);
 	/* Start delayed path verification. */
 	ccw_device_online_verify(cdev, 0);
diff --git a/drivers/s390/cio/device_ops.c b/drivers/s390/cio/device_ops.c
index 651976b54af..f98698d5735 100644
--- a/drivers/s390/cio/device_ops.c
+++ b/drivers/s390/cio/device_ops.c
@@ -418,12 +418,9 @@ int ccw_device_resume(struct ccw_device *cdev)
 int
 ccw_device_call_handler(struct ccw_device *cdev)
 {
-	struct subchannel *sch;
 	unsigned int stctl;
 	int ending_status;
 
-	sch = to_subchannel(cdev->dev.parent);
-
 	/*
 	 * we allow for the device action handler if .
 	 *  - we received ending status
diff --git a/drivers/s390/cio/qdio_main.c b/drivers/s390/cio/qdio_main.c
index e8f267eb888..55e8f721e38 100644
--- a/drivers/s390/cio/qdio_main.c
+++ b/drivers/s390/cio/qdio_main.c
@@ -1446,7 +1446,7 @@ set:
 static int handle_outbound(struct qdio_q *q, unsigned int callflags,
 			   int bufnr, int count)
 {
-	unsigned char state;
+	unsigned char state = 0;
 	int used, rc = 0;
 
 	qperf_inc(q, outbound_call);