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Commit 02cd743b authored by Darrick J. Wong's avatar Darrick J. Wong Committed by James Bottomley
Browse files

[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: default avatarAlexis Bruemmer <alexisb@us.ibm.com>
Signed-off-by: default avatarJames Bottomley <James.Bottomley@SteelEye.com>
parent 6b0efb85

drivers/scsi/libsas/sas_scsi_host.c

+11 −3
Original line number Diff line number Diff line
@@ -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);