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authorStefan Haberland <stefan.haberland@de.ibm.com>2014-07-18 14:22:41 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2014-07-22 09:26:22 +0200
commit931a3dce819d2dedc731011c6fd7e6bb5aa188ef (patch)
treebe3149828417c9923b271cfbe5b94719d601615d /drivers/s390/block
parentdaa991bf30cbea85dc10560e6932406677ed5d5c (diff)
downloadop-kernel-dev-931a3dce819d2dedc731011c6fd7e6bb5aa188ef.zip
op-kernel-dev-931a3dce819d2dedc731011c6fd7e6bb5aa188ef.tar.gz
dasd: fix unresponsive device during format
If path events occur the formatting process stucks because path events may flush format requests from the queue. Kick the format process after path events are handled. Signed-off-by: Stefan Haberland <stefan.haberland@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/block')
-rw-r--r--drivers/s390/block/dasd.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index 5e8442c..9242d7c 100644
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -1675,8 +1675,11 @@ void dasd_int_handler(struct ccw_device *cdev, unsigned long intparm,
if (cqr->status == DASD_CQR_CLEAR_PENDING &&
scsw_fctl(&irb->scsw) & SCSW_FCTL_CLEAR_FUNC) {
cqr->status = DASD_CQR_CLEARED;
+ if (cqr->callback_data == DASD_SLEEPON_START_TAG)
+ cqr->callback_data = DASD_SLEEPON_END_TAG;
dasd_device_clear_timer(device);
wake_up(&dasd_flush_wq);
+ wake_up(&generic_waitq);
dasd_schedule_device_bh(device);
return;
}
@@ -2439,6 +2442,8 @@ int dasd_cancel_req(struct dasd_ccw_req *cqr)
case DASD_CQR_QUEUED:
/* request was not started - just set to cleared */
cqr->status = DASD_CQR_CLEARED;
+ if (cqr->callback_data == DASD_SLEEPON_START_TAG)
+ cqr->callback_data = DASD_SLEEPON_END_TAG;
break;
case DASD_CQR_IN_IO:
/* request in IO - terminate IO and release again */
@@ -3512,6 +3517,10 @@ int dasd_generic_path_operational(struct dasd_device *device)
dasd_schedule_device_bh(device);
if (device->block)
dasd_schedule_block_bh(device->block);
+
+ if (!device->stopped)
+ wake_up(&generic_waitq);
+
return 1;
}
EXPORT_SYMBOL_GPL(dasd_generic_path_operational);
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