scsi: ses: Have midlayer retry scsi_execute_cmd() errors

This has ses have the SCSI midlayer retry scsi_execute_cmd() errors instead
of driving them itself.

Signed-off-by: Mike Christie <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Acked-by: Christoph Hellwig <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>

Author: mikechristie

drivers/scsi/ses.c

@@ -87,19 +87,32 @@ static int ses_recv_diag(struct scsi_device *sdev, int page_code,
 		0
 	};
 	unsigned char recv_page_code;
-	unsigned int retries = SES_RETRIES;
-	struct scsi_sense_hdr sshdr;
+	struct scsi_failure failure_defs[] = {
+		{
+			.sense = UNIT_ATTENTION,
+			.asc = 0x29,
+			.ascq = SCMD_FAILURE_ASCQ_ANY,
+			.allowed = SES_RETRIES,
+			.result = SAM_STAT_CHECK_CONDITION,
+		},
+		{
+			.sense = NOT_READY,
+			.asc = SCMD_FAILURE_ASC_ANY,
+			.ascq = SCMD_FAILURE_ASCQ_ANY,
+			.allowed = SES_RETRIES,
+			.result = SAM_STAT_CHECK_CONDITION,
+		},
+		{}
+	};
+	struct scsi_failures failures = {
+		.failure_definitions = failure_defs,
+	};
 	const struct scsi_exec_args exec_args = {
-		.sshdr = &sshdr,
+		.failures = &failures,
 	};
 
-	do {
-		ret = scsi_execute_cmd(sdev, cmd, REQ_OP_DRV_IN, buf, bufflen,
-				       SES_TIMEOUT, 1, &exec_args);
-	} while (ret > 0 && --retries && scsi_sense_valid(&sshdr) &&
-		 (sshdr.sense_key == NOT_READY ||
-		  (sshdr.sense_key == UNIT_ATTENTION && sshdr.asc == 0x29)));
-
+	ret = scsi_execute_cmd(sdev, cmd, REQ_OP_DRV_IN, buf, bufflen,
+			       SES_TIMEOUT, 1, &exec_args);
 	if (unlikely(ret))
 		return ret;
 
@@ -131,19 +144,32 @@ static int ses_send_diag(struct scsi_device *sdev, int page_code,
 		bufflen & 0xff,
 		0
 	};
-	struct scsi_sense_hdr sshdr;
-	unsigned int retries = SES_RETRIES;
+	struct scsi_failure failure_defs[] = {
+		{
+			.sense = UNIT_ATTENTION,
+			.asc = 0x29,
+			.ascq = SCMD_FAILURE_ASCQ_ANY,
+			.allowed = SES_RETRIES,
+			.result = SAM_STAT_CHECK_CONDITION,
+		},
+		{
+			.sense = NOT_READY,
+			.asc = SCMD_FAILURE_ASC_ANY,
+			.ascq = SCMD_FAILURE_ASCQ_ANY,
+			.allowed = SES_RETRIES,
+			.result = SAM_STAT_CHECK_CONDITION,
+		},
+		{}
+	};
+	struct scsi_failures failures = {
+		.failure_definitions = failure_defs,
+	};
 	const struct scsi_exec_args exec_args = {
-		.sshdr = &sshdr,
+		.failures = &failures,
 	};
 
-	do {
-		result = scsi_execute_cmd(sdev, cmd, REQ_OP_DRV_OUT, buf,
-					  bufflen, SES_TIMEOUT, 1, &exec_args);
-	} while (result > 0 && --retries && scsi_sense_valid(&sshdr) &&
-		 (sshdr.sense_key == NOT_READY ||
-		  (sshdr.sense_key == UNIT_ATTENTION && sshdr.asc == 0x29)));
-
+	result = scsi_execute_cmd(sdev, cmd, REQ_OP_DRV_OUT, buf, bufflen,
+				  SES_TIMEOUT, 1, &exec_args);
 	if (result)
 		sdev_printk(KERN_ERR, sdev, "SEND DIAGNOSTIC result: %8x\n",
 			    result);