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dasd: fix unresponsive device during format

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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>
This commit is contained in:
Stefan Haberland 2014-07-18 14:22:41 +02:00 committed by Martin Schwidefsky
parent daa991bf30
commit 931a3dce81
1 changed files with 9 additions and 0 deletions
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9
drivers/s390/block/dasd.c
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@ -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);