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| author | Stefan Haberland <stefan.haberland@de.ibm.com> | 2011-10-30 15:17:09 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2011-10-30 15:16:45 +0100 |
| commit | c8d1c0ff840bbf06c60ff4235202a4b1457d8f59 (patch) | |
| tree | b183231aa76a1268141c68cf8566f9e07915800b /drivers/s390/block/dasd_eckd.c | |
| parent | 6ffed94ea73c0c15e3201d4d479b6efe8343fb96 (diff) | |
| download | linux-c8d1c0ff840bbf06c60ff4235202a4b1457d8f59.tar.gz | |
[S390] dasd: prevent path verification before resume
Mark the device as suspended and delay execution of the path
verification worker to prevent mix-up.
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/dasd_eckd.c')
| -rw-r--r-- | drivers/s390/block/dasd_eckd.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/drivers/s390/block/dasd_eckd.c b/drivers/s390/block/dasd_eckd.c index cb1bbc2947e387..cca25096efce84 100644 --- a/drivers/s390/block/dasd_eckd.c +++ b/drivers/s390/block/dasd_eckd.c @@ -1101,6 +1101,12 @@ static void do_path_verification_work(struct work_struct *work) data = container_of(work, struct path_verification_work_data, worker); device = data->device; + /* delay path verification until device was resumed */ + if (test_bit(DASD_FLAG_SUSPENDED, &device->flags)) { + schedule_work(work); + return; + } + opm = 0; npm = 0; ppm = 0; @@ -2047,9 +2053,13 @@ static void dasd_eckd_check_for_device_change(struct dasd_device *device, /* first of all check for state change pending interrupt */ mask = DEV_STAT_ATTENTION | DEV_STAT_DEV_END | DEV_STAT_UNIT_EXCEP; if ((scsw_dstat(&irb->scsw) & mask) == mask) { - /* for alias only and not in offline processing*/ + /* + * for alias only, not in offline processing + * and only if not suspended + */ if (!device->block && private->lcu && - !test_bit(DASD_FLAG_OFFLINE, &device->flags)) { + !test_bit(DASD_FLAG_OFFLINE, &device->flags) && + !test_bit(DASD_FLAG_SUSPENDED, &device->flags)) { /* * the state change could be caused by an alias * reassignment remove device from alias handling |