diff options
| author |   Swen Schillig <swen@vnet.ibm.com> | 2008-10-01 12:42:25 +0200 |
|---|---|---|
| committer |   James Bottomley <James.Bottomley@HansenPartnership.com> | 2008-10-03 12:11:56 -0500 |
| commit | 091694a556d168dc9df4d79e3a40116550b183cf (patch) | |
| tree | d682fea39421269f67287e5dee5c6048247f08dc /drivers/s390/scsi | |
| parent | [SCSI] zfcp: fix erp list usage without using locks (diff) | |
| download | linux-dev-091694a556d168dc9df4d79e3a40116550b183cf.tar.xz linux-dev-091694a556d168dc9df4d79e3a40116550b183cf.zip | |
[SCSI] zfcp: wait on SCSI work to be finished before proceeding with init dev
Due to the character of a scheduled work we cannot guarantee the
LUN register to be finished before an initial device tries to use it.
Therefor we have to wait for PENDING_SCSI_WORK flag to be cleared
before proceeding.
Signed-off-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Diffstat (limited to 'drivers/s390/scsi')
| -rw-r--r-- | drivers/s390/scsi/zfcp_aux.c | 5 | ||||
| -rw-r--r-- | drivers/s390/scsi/zfcp_erp.c | 1 |
2 files changed, 6 insertions, 0 deletions
diff --git a/drivers/s390/scsi/zfcp_aux.c b/drivers/s390/scsi/zfcp_aux.c index 05f3de64f6a3..24255e42dc30 100644 --- a/drivers/s390/scsi/zfcp_aux.c +++ b/drivers/s390/scsi/zfcp_aux.c @@ -129,7 +129,12 @@ static void __init zfcp_init_device_configure(void) goto out_unit; up(&zfcp_data.config_sema); ccw_device_set_online(adapter->ccw_device); + zfcp_erp_wait(adapter); + wait_event(adapter->erp_done_wqh, + !(atomic_read(&unit->status) & + ZFCP_STATUS_UNIT_SCSI_WORK_PENDING)); + down(&zfcp_data.config_sema); zfcp_unit_put(unit); out_unit: diff --git a/drivers/s390/scsi/zfcp_erp.c b/drivers/s390/scsi/zfcp_erp.c index 4539530768a2..26049c663438 100644 --- a/drivers/s390/scsi/zfcp_erp.c +++ b/drivers/s390/scsi/zfcp_erp.c @@ -1189,6 +1189,7 @@ static void zfcp_erp_scsi_scan(struct work_struct *work) scsilun_to_int((struct scsi_lun *)&unit->fcp_lun), 0); atomic_clear_mask(ZFCP_STATUS_UNIT_SCSI_WORK_PENDING, &unit->status); zfcp_unit_put(unit); + wake_up(&unit->port->adapter->erp_done_wqh); kfree(p); } |