diff options
| -rw-r--r-- | drivers/scsi/ibmvscsi/ibmvscsi.c | 23 |
1 files changed, 20 insertions, 3 deletions
diff --git a/drivers/scsi/ibmvscsi/ibmvscsi.c b/drivers/scsi/ibmvscsi/ibmvscsi.c index fe09d145542..1ae800ae93d 100644 --- a/drivers/scsi/ibmvscsi/ibmvscsi.c +++ b/drivers/scsi/ibmvscsi/ibmvscsi.c @@ -826,11 +826,13 @@ static int ibmvscsi_eh_abort_handler(struct scsi_cmnd *cmd) struct srp_event_struct *tmp_evt, *found_evt; union viosrp_iu srp_rsp; int rsp_rc; + unsigned long flags; u16 lun = lun_from_dev(cmd->device); /* First, find this command in our sent list so we can figure * out the correct tag */ + spin_lock_irqsave(hostdata->host->host_lock, flags); found_evt = NULL; list_for_each_entry(tmp_evt, &hostdata->sent, list) { if (tmp_evt->cmnd == cmd) { @@ -839,11 +841,14 @@ static int ibmvscsi_eh_abort_handler(struct scsi_cmnd *cmd) } } - if (!found_evt) + if (!found_evt) { + spin_unlock_irqrestore(hostdata->host->host_lock, flags); return FAILED; + } evt = get_event_struct(&hostdata->pool); if (evt == NULL) { + spin_unlock_irqrestore(hostdata->host->host_lock, flags); printk(KERN_ERR "ibmvscsi: failed to allocate abort event\n"); return FAILED; } @@ -867,7 +872,9 @@ static int ibmvscsi_eh_abort_handler(struct scsi_cmnd *cmd) evt->sync_srp = &srp_rsp; init_completion(&evt->comp); - if (ibmvscsi_send_srp_event(evt, hostdata) != 0) { + rsp_rc = ibmvscsi_send_srp_event(evt, hostdata); + spin_unlock_irqrestore(hostdata->host->host_lock, flags); + if (rsp_rc != 0) { printk(KERN_ERR "ibmvscsi: failed to send abort() event\n"); return FAILED; } @@ -901,6 +908,7 @@ static int ibmvscsi_eh_abort_handler(struct scsi_cmnd *cmd) * The event is no longer in our list. Make sure it didn't * complete while we were aborting */ + spin_lock_irqsave(hostdata->host->host_lock, flags); found_evt = NULL; list_for_each_entry(tmp_evt, &hostdata->sent, list) { if (tmp_evt->cmnd == cmd) { @@ -910,6 +918,7 @@ static int ibmvscsi_eh_abort_handler(struct scsi_cmnd *cmd) } if (found_evt == NULL) { + spin_unlock_irqrestore(hostdata->host->host_lock, flags); printk(KERN_INFO "ibmvscsi: aborted task tag 0x%lx completed\n", tsk_mgmt->managed_task_tag); @@ -924,6 +933,7 @@ static int ibmvscsi_eh_abort_handler(struct scsi_cmnd *cmd) list_del(&found_evt->list); unmap_cmd_data(&found_evt->iu.srp.cmd, found_evt->hostdata->dev); free_event_struct(&found_evt->hostdata->pool, found_evt); + spin_unlock_irqrestore(hostdata->host->host_lock, flags); atomic_inc(&hostdata->request_limit); return SUCCESS; } @@ -943,10 +953,13 @@ static int ibmvscsi_eh_device_reset_handler(struct scsi_cmnd *cmd) struct srp_event_struct *tmp_evt, *pos; union viosrp_iu srp_rsp; int rsp_rc; + unsigned long flags; u16 lun = lun_from_dev(cmd->device); + spin_lock_irqsave(hostdata->host->host_lock, flags); evt = get_event_struct(&hostdata->pool); if (evt == NULL) { + spin_unlock_irqrestore(hostdata->host->host_lock, flags); printk(KERN_ERR "ibmvscsi: failed to allocate reset event\n"); return FAILED; } @@ -969,7 +982,9 @@ static int ibmvscsi_eh_device_reset_handler(struct scsi_cmnd *cmd) evt->sync_srp = &srp_rsp; init_completion(&evt->comp); - if (ibmvscsi_send_srp_event(evt, hostdata) != 0) { + rsp_rc = ibmvscsi_send_srp_event(evt, hostdata); + spin_unlock_irqrestore(hostdata->host->host_lock, flags); + if (rsp_rc != 0) { printk(KERN_ERR "ibmvscsi: failed to send reset event\n"); return FAILED; } @@ -1002,6 +1017,7 @@ static int ibmvscsi_eh_device_reset_handler(struct scsi_cmnd *cmd) /* We need to find all commands for this LUN that have not yet been * responded to, and fail them with DID_RESET */ + spin_lock_irqsave(hostdata->host->host_lock, flags); list_for_each_entry_safe(tmp_evt, pos, &hostdata->sent, list) { if ((tmp_evt->cmnd) && (tmp_evt->cmnd->device == cmd->device)) { if (tmp_evt->cmnd) @@ -1017,6 +1033,7 @@ static int ibmvscsi_eh_device_reset_handler(struct scsi_cmnd *cmd) tmp_evt->done(tmp_evt); } } + spin_unlock_irqrestore(hostdata->host->host_lock, flags); return SUCCESS; } |