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path: root/drivers/scsi/libsas/sas_scsi_host.c
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Diffstat (limited to 'drivers/scsi/libsas/sas_scsi_host.c')
-rw-r--r--drivers/scsi/libsas/sas_scsi_host.c34
1 files changed, 15 insertions, 19 deletions
diff --git a/drivers/scsi/libsas/sas_scsi_host.c b/drivers/scsi/libsas/sas_scsi_host.c
index 704ea06a6e50..1f8241563c6c 100644
--- a/drivers/scsi/libsas/sas_scsi_host.c
+++ b/drivers/scsi/libsas/sas_scsi_host.c
@@ -434,7 +434,7 @@ static int sas_recover_I_T(struct domain_device *dev)
}
/* Find the sas_phy that's attached to this device */
-static struct sas_phy *find_local_sas_phy(struct domain_device *dev)
+struct sas_phy *sas_find_local_phy(struct domain_device *dev)
{
struct domain_device *pdev = dev->parent;
struct ex_phy *exphy = NULL;
@@ -456,6 +456,7 @@ static struct sas_phy *find_local_sas_phy(struct domain_device *dev)
BUG_ON(!exphy);
return exphy->phy;
}
+EXPORT_SYMBOL_GPL(sas_find_local_phy);
/* Attempt to send a LUN reset message to a device */
int sas_eh_device_reset_handler(struct scsi_cmnd *cmd)
@@ -482,7 +483,7 @@ int sas_eh_device_reset_handler(struct scsi_cmnd *cmd)
int sas_eh_bus_reset_handler(struct scsi_cmnd *cmd)
{
struct domain_device *dev = cmd_to_domain_dev(cmd);
- struct sas_phy *phy = find_local_sas_phy(dev);
+ struct sas_phy *phy = sas_find_local_phy(dev);
int res;
res = sas_phy_reset(phy, 1);
@@ -497,10 +498,10 @@ int sas_eh_bus_reset_handler(struct scsi_cmnd *cmd)
}
/* Try to reset a device */
-static int try_to_reset_cmd_device(struct Scsi_Host *shost,
- struct scsi_cmnd *cmd)
+static int try_to_reset_cmd_device(struct scsi_cmnd *cmd)
{
int res;
+ struct Scsi_Host *shost = cmd->device->host;
if (!shost->hostt->eh_device_reset_handler)
goto try_bus_reset;
@@ -540,6 +541,12 @@ Again:
need_reset = task->task_state_flags & SAS_TASK_NEED_DEV_RESET;
spin_unlock_irqrestore(&task->task_state_lock, flags);
+ if (need_reset) {
+ SAS_DPRINTK("%s: task 0x%p requests reset\n",
+ __FUNCTION__, task);
+ goto reset;
+ }
+
SAS_DPRINTK("trying to find task 0x%p\n", task);
res = sas_scsi_find_task(task);
@@ -550,18 +557,15 @@ Again:
SAS_DPRINTK("%s: task 0x%p is done\n", __FUNCTION__,
task);
sas_eh_finish_cmd(cmd);
- if (need_reset)
- try_to_reset_cmd_device(shost, cmd);
continue;
case TASK_IS_ABORTED:
SAS_DPRINTK("%s: task 0x%p is aborted\n",
__FUNCTION__, task);
sas_eh_finish_cmd(cmd);
- if (need_reset)
- try_to_reset_cmd_device(shost, cmd);
continue;
case TASK_IS_AT_LU:
SAS_DPRINTK("task 0x%p is at LU: lu recover\n", task);
+ reset:
tmf_resp = sas_recover_lu(task->dev, cmd);
if (tmf_resp == TMF_RESP_FUNC_COMPLETE) {
SAS_DPRINTK("dev %016llx LU %x is "
@@ -569,8 +573,6 @@ Again:
SAS_ADDR(task->dev),
cmd->device->lun);
sas_eh_finish_cmd(cmd);
- if (need_reset)
- try_to_reset_cmd_device(shost, cmd);
sas_scsi_clear_queue_lu(work_q, cmd);
goto Again;
}
@@ -581,15 +583,15 @@ Again:
task);
tmf_resp = sas_recover_I_T(task->dev);
if (tmf_resp == TMF_RESP_FUNC_COMPLETE) {
+ struct domain_device *dev = task->dev;
SAS_DPRINTK("I_T %016llx recovered\n",
SAS_ADDR(task->dev->sas_addr));
sas_eh_finish_cmd(cmd);
- if (need_reset)
- try_to_reset_cmd_device(shost, cmd);
- sas_scsi_clear_queue_I_T(work_q, task->dev);
+ sas_scsi_clear_queue_I_T(work_q, dev);
goto Again;
}
/* Hammer time :-) */
+ try_to_reset_cmd_device(cmd);
if (i->dft->lldd_clear_nexus_port) {
struct asd_sas_port *port = task->dev->port;
SAS_DPRINTK("clearing nexus for port:%d\n",
@@ -599,8 +601,6 @@ Again:
SAS_DPRINTK("clear nexus port:%d "
"succeeded\n", port->id);
sas_eh_finish_cmd(cmd);
- if (need_reset)
- try_to_reset_cmd_device(shost, cmd);
sas_scsi_clear_queue_port(work_q,
port);
goto Again;
@@ -613,8 +613,6 @@ Again:
SAS_DPRINTK("clear nexus ha "
"succeeded\n");
sas_eh_finish_cmd(cmd);
- if (need_reset)
- try_to_reset_cmd_device(shost, cmd);
goto clear_q;
}
}
@@ -628,8 +626,6 @@ Again:
cmd->device->lun);
sas_eh_finish_cmd(cmd);
- if (need_reset)
- try_to_reset_cmd_device(shost, cmd);
goto clear_q;
}
}