[S390] Add timeouts during sense PGID, path verification and disband PGID.

While the machine owns us an interrupt in these cases (and we should get
one), reality isn't always like that...

Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

diff --git a/drivers/s390/cio/device_fsm.c b/drivers/s390/cio/device_fsm.c
index dace46f..b676202 100644 (file)
--- a/drivers/s390/cio/device_fsm.c
+++ b/drivers/s390/cio/device_fsm.c
@@ -349,6 +349,8 @@ ccw_device_done(struct ccw_device *cdev, int state)
 
        sch = to_subchannel(cdev->dev.parent);
 
+       ccw_device_set_timeout(cdev, 0);
+
        if (state != DEV_STATE_ONLINE)
                cio_disable_subchannel(sch);
 

diff --git a/drivers/s390/cio/device_ops.c b/drivers/s390/cio/device_ops.c
index 93a897e..e7eeaf1 100644 (file)
--- a/drivers/s390/cio/device_ops.c
+++ b/drivers/s390/cio/device_ops.c
@@ -216,6 +216,9 @@ ccw_device_call_handler(struct ccw_device *cdev)
              (stctl & SCSW_STCTL_PRIM_STATUS)))
                return 0;
 
+       /* Clear pending timers for device driver initiated I/O. */
+       if (ending_status)
+               ccw_device_set_timeout(cdev, 0);
        /*
         * Now we are ready to call the device driver interrupt handler.
         */

diff --git a/drivers/s390/cio/device_pgid.c b/drivers/s390/cio/device_pgid.c
index 8ca2d07..84917b3 100644 (file)
--- a/drivers/s390/cio/device_pgid.c
+++ b/drivers/s390/cio/device_pgid.c
@@ -96,6 +96,9 @@ ccw_device_sense_pgid_start(struct ccw_device *cdev)
 {
        int ret;
 
+       /* Set a timeout of 60s */
+       ccw_device_set_timeout(cdev, 60*HZ);
+
        cdev->private->state = DEV_STATE_SENSE_PGID;
        cdev->private->imask = 0x80;
        cdev->private->iretry = 5;
@@ -480,6 +483,8 @@ ccw_device_verify_start(struct ccw_device *cdev)
                ccw_device_verify_done(cdev, -ENODEV);
                return;
        }
+       /* After 60s path verification is considered to have failed. */
+       ccw_device_set_timeout(cdev, 60*HZ);
        __ccw_device_verify_start(cdev);
 }
 
@@ -554,6 +559,9 @@ ccw_device_disband_irq(struct ccw_device *cdev, enum dev_event dev_event)
 void
 ccw_device_disband_start(struct ccw_device *cdev)
 {
+       /* After 60s disbanding is considered to have failed. */
+       ccw_device_set_timeout(cdev, 60*HZ);
+
        cdev->private->flags.pgid_single = 0;
        cdev->private->iretry = 5;
        cdev->private->imask = 0x80;