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authorDarrick J. Wong <djwong@us.ibm.com>2007-01-11 14:15:46 -0800
committerJames Bottomley <jejb@mulgrave.il.steeleye.com>2007-01-13 16:23:40 -0600
commit02cd743bb3a37f27681c487608fb819493fa4010 (patch)
tree9641aa94df40d8b97aacca1fda9c054cd79491cf /drivers/scsi/libsas
parent6b0efb8516a5298e12033df61f9e0c376a306adb (diff)
[SCSI] libsas: Start I_T recovery if ABORT TASK fails
The EH should fall into I_T recovery (and potentially stronger remedies) if ABORT TASK fails. Signed-off-by: Alexis Bruemmer <alexisb@us.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers/scsi/libsas')
-rw-r--r--drivers/scsi/libsas/sas_scsi_host.c14
1 files changed, 11 insertions, 3 deletions
diff --git a/drivers/scsi/libsas/sas_scsi_host.c b/drivers/scsi/libsas/sas_scsi_host.c
index 8a1b98e3943c..9ffe7605fb9d 100644
--- a/drivers/scsi/libsas/sas_scsi_host.c
+++ b/drivers/scsi/libsas/sas_scsi_host.c
@@ -281,6 +281,7 @@ enum task_disposition {
TASK_IS_ABORTED,
TASK_IS_AT_LU,
TASK_IS_NOT_AT_LU,
+ TASK_ABORT_FAILED,
};
static enum task_disposition sas_scsi_find_task(struct sas_task *task)
@@ -331,15 +332,21 @@ static enum task_disposition sas_scsi_find_task(struct sas_task *task)
SAS_DPRINTK("%s: querying task 0x%p\n",
__FUNCTION__, task);
res = si->dft->lldd_query_task(task);
- if (res == TMF_RESP_FUNC_SUCC) {
+ switch (res) {
+ case TMF_RESP_FUNC_SUCC:
SAS_DPRINTK("%s: task 0x%p at LU\n",
__FUNCTION__, task);
return TASK_IS_AT_LU;
- } else if (res == TMF_RESP_FUNC_COMPLETE) {
+ case TMF_RESP_FUNC_COMPLETE:
SAS_DPRINTK("%s: task 0x%p not at LU\n",
__FUNCTION__, task);
return TASK_IS_NOT_AT_LU;
- }
+ case TMF_RESP_FUNC_FAILED:
+ SAS_DPRINTK("%s: task 0x%p failed to abort\n",
+ __FUNCTION__, task);
+ return TASK_ABORT_FAILED;
+ }
+
}
}
return res;
@@ -475,6 +482,7 @@ Again:
}
/* fallthrough */
case TASK_IS_NOT_AT_LU:
+ case TASK_ABORT_FAILED:
SAS_DPRINTK("task 0x%p is not at LU: I_T recover\n",
task);
tmf_resp = sas_recover_I_T(task->dev);