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authorCornelia Huck <cornelia.huck@de.ibm.com>2006-10-04 20:02:02 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2006-10-04 20:02:02 +0200
commitf1ee3281bedbbca70a1f53bc715ea6f27c616052 (patch)
treef5615111db312f3a429a66aa62119803d781078a
parentb05e37035298148b6c311eccf06ac50fd389f0b2 (diff)
downloadlinux-linaro-f1ee3281bedbbca70a1f53bc715ea6f27c616052.tar.gz
[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>
-rw-r--r--drivers/s390/cio/device_fsm.c2
-rw-r--r--drivers/s390/cio/device_ops.c3
-rw-r--r--drivers/s390/cio/device_pgid.c8
3 files changed, 13 insertions, 0 deletions
diff --git a/drivers/s390/cio/device_fsm.c b/drivers/s390/cio/device_fsm.c
index dace46fc32e..b67620208f3 100644
--- 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 93a897eebff..e7eeaf1c182 100644
--- 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 8ca2d078848..84917b39de4 100644
--- 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;