diff options
| author | Christof Schmitt <christof.schmitt@de.ibm.com> | 2009-04-17 15:08:15 +0200 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@HansenPartnership.com> | 2009-04-27 10:07:37 -0500 |
| commit | 70932935b61ee3dcc5a419ec4c367feb2ff808e4 (patch) | |
| tree | 67e0925b8a44b3e163e4da36ecff299ba9e842bf /drivers/s390/scsi/zfcp_fsf.c | |
| parent | 3869bb6e73f5f55ce16b13025726b0bfdf1f4aae (diff) | |
| download | kernel_samsung_smdk4412-70932935b61ee3dcc5a419ec4c367feb2ff808e4.zip kernel_samsung_smdk4412-70932935b61ee3dcc5a419ec4c367feb2ff808e4.tar.gz kernel_samsung_smdk4412-70932935b61ee3dcc5a419ec4c367feb2ff808e4.tar.bz2 | |
[SCSI] zfcp: Fix oops when port disappears
The zfcp_port might have been removed, while the FC fast_io_fail timer
is still running and could trigger the terminate_rport_io callback.
Set the pointer to the zfcp_port to NULL and check accordingly
before using it.
Reviewed-by: Martin Petermann <martin@linux.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/zfcp_fsf.c')
| -rw-r--r-- | drivers/s390/scsi/zfcp_fsf.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/s390/scsi/zfcp_fsf.c b/drivers/s390/scsi/zfcp_fsf.c index 3f365ac..74dee32 100644 --- a/drivers/s390/scsi/zfcp_fsf.c +++ b/drivers/s390/scsi/zfcp_fsf.c @@ -172,12 +172,16 @@ static void zfcp_fsf_link_down_info_eval(struct zfcp_fsf_req *req, char *id, struct fsf_link_down_info *link_down) { struct zfcp_adapter *adapter = req->adapter; + unsigned long flags; if (atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED) return; atomic_set_mask(ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED, &adapter->status); + + read_lock_irqsave(&zfcp_data.config_lock, flags); zfcp_scsi_schedule_rports_block(adapter); + read_unlock_irqrestore(&zfcp_data.config_lock, flags); if (!link_down) goto out; |