Add helper function scsi_eh_sdev_stu() to perform START_UNIT and check
if to finish some error commands.
This is preparation for a genernal LUN/target based error handle
strategy and did not change original logic.
Signed-off-by: Wenchao Hao <[email protected]>
---
drivers/scsi/scsi_error.c | 50 +++++++++++++++++++++++----------------
1 file changed, 29 insertions(+), 21 deletions(-)
diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c
index 48ed035d44ce..64eb616261ec 100644
--- a/drivers/scsi/scsi_error.c
+++ b/drivers/scsi/scsi_error.c
@@ -1564,6 +1564,31 @@ static int scsi_eh_try_stu(struct scsi_cmnd *scmd)
return 1;
}
+static int scsi_eh_sdev_stu(struct scsi_cmnd *scmd,
+ struct list_head *work_q,
+ struct list_head *done_q)
+{
+ struct scsi_device *sdev = scmd->device;
+ struct scsi_cmnd *next;
+
+ SCSI_LOG_ERROR_RECOVERY(3, sdev_printk(KERN_INFO, sdev,
+ "%s: Sending START_UNIT\n", current->comm));
+
+ if (scsi_eh_try_stu(scmd)) {
+ SCSI_LOG_ERROR_RECOVERY(3, sdev_printk(KERN_INFO, sdev,
+ "%s: START_UNIT failed\n", current->comm));
+ return 0;
+ }
+
+ if (!scsi_device_online(sdev) || !scsi_eh_tur(scmd))
+ list_for_each_entry_safe(scmd, next, work_q, eh_entry)
+ if (scmd->device == sdev &&
+ scsi_eh_action(scmd, SUCCESS) == SUCCESS)
+ scsi_eh_finish_cmd(scmd, done_q);
+
+ return list_empty(work_q);
+}
+
/**
* scsi_eh_stu - send START_UNIT if needed
* @shost: &scsi host being recovered.
@@ -1578,7 +1603,7 @@ static int scsi_eh_stu(struct Scsi_Host *shost,
struct list_head *work_q,
struct list_head *done_q)
{
- struct scsi_cmnd *scmd, *stu_scmd, *next;
+ struct scsi_cmnd *scmd, *stu_scmd;
struct scsi_device *sdev;
shost_for_each_device(sdev, shost) {
@@ -1601,26 +1626,9 @@ static int scsi_eh_stu(struct Scsi_Host *shost,
if (!stu_scmd)
continue;
- SCSI_LOG_ERROR_RECOVERY(3,
- sdev_printk(KERN_INFO, sdev,
- "%s: Sending START_UNIT\n",
- current->comm));
-
- if (!scsi_eh_try_stu(stu_scmd)) {
- if (!scsi_device_online(sdev) ||
- !scsi_eh_tur(stu_scmd)) {
- list_for_each_entry_safe(scmd, next,
- work_q, eh_entry) {
- if (scmd->device == sdev &&
- scsi_eh_action(scmd, SUCCESS) == SUCCESS)
- scsi_eh_finish_cmd(scmd, done_q);
- }
- }
- } else {
- SCSI_LOG_ERROR_RECOVERY(3,
- sdev_printk(KERN_INFO, sdev,
- "%s: START_UNIT failed\n",
- current->comm));
+ if (scsi_eh_sdev_stu(stu_scmd, work_q, done_q)) {
+ scsi_device_put(sdev);
+ break;
}
}
--
2.35.3