1 files changed, 25 insertions, 22 deletions

diff --git a/drivers/scsi/ch.c b/drivers/scsi/ch.c
index 2b864061e073..fa07a6f54003 100644
--- a/drivers/scsi/ch.c
+++ b/drivers/scsi/ch.c
@@ -102,7 +102,9 @@ do {									\
 
 #define MAX_RETRIES   1
 
-static struct class * ch_sysfs_class;
+static const struct class ch_sysfs_class = {
+	.name = "scsi_changer",
+};
 
 typedef struct {
 	struct kref         ref;
@@ -113,7 +115,6 @@ typedef struct {
 	struct scsi_device  **dt;        /* ptrs to data transfer elements */
 	u_int               firsts[CH_TYPES];
 	u_int               counts[CH_TYPES];
-	u_int               unit_attention;
 	u_int		    voltags;
 	struct mutex	    lock;
 } scsi_changer;
@@ -186,17 +187,29 @@ static int
 ch_do_scsi(scsi_changer *ch, unsigned char *cmd, int cmd_len,
 	   void *buffer, unsigned int buflength, enum req_op op)
 {
-	int errno, retries = 0, timeout, result;
+	int errno = 0, timeout, result;
 	struct scsi_sense_hdr sshdr;
+	struct scsi_failure failure_defs[] = {
+		{
+			.sense = UNIT_ATTENTION,
+			.asc = SCMD_FAILURE_ASC_ANY,
+			.ascq = SCMD_FAILURE_ASCQ_ANY,
+			.allowed = 3,
+			.result = SAM_STAT_CHECK_CONDITION,
+		},
+		{}
+	};
+	struct scsi_failures failures = {
+		.failure_definitions = failure_defs,
+	};
 	const struct scsi_exec_args exec_args = {
 		.sshdr = &sshdr,
+		.failures = &failures,
 	};
 
 	timeout = (cmd[0] == INITIALIZE_ELEMENT_STATUS)
 		? timeout_init : timeout_move;
 
- retry:
-	errno = 0;
 	result = scsi_execute_cmd(ch->device, cmd, op, buffer, buflength,
 				  timeout * HZ, MAX_RETRIES, &exec_args);
 	if (result < 0)
@@ -205,14 +218,6 @@ ch_do_scsi(scsi_changer *ch, unsigned char *cmd, int cmd_len,
 		if (debug)
 			scsi_print_sense_hdr(ch->device, ch->name, &sshdr);
 		errno = ch_find_errno(&sshdr);
-
-		switch(sshdr.sense_key) {
-		case UNIT_ATTENTION:
-			ch->unit_attention = 1;
-			if (retries++ < 3)
-				goto retry;
-			break;
-		}
 	}
 	return errno;
 }
@@ -927,7 +932,7 @@ static int ch_probe(struct device *dev)
 	mutex_init(&ch->lock);
 	kref_init(&ch->ref);
 	ch->device = sd;
-	class_dev = device_create(ch_sysfs_class, dev,
+	class_dev = device_create(&ch_sysfs_class, dev,
 				  MKDEV(SCSI_CHANGER_MAJOR, ch->minor), ch,
 				  "s%s", ch->name);
 	if (IS_ERR(class_dev)) {
@@ -952,7 +957,7 @@ static int ch_probe(struct device *dev)
 
 	return 0;
 destroy_dev:
-	device_destroy(ch_sysfs_class, MKDEV(SCSI_CHANGER_MAJOR, ch->minor));
+	device_destroy(&ch_sysfs_class, MKDEV(SCSI_CHANGER_MAJOR, ch->minor));
 put_device:
 	scsi_device_put(sd);
 remove_idr:
@@ -971,7 +976,7 @@ static int ch_remove(struct device *dev)
 	dev_set_drvdata(dev, NULL);
 	spin_unlock(&ch_index_lock);
 
-	device_destroy(ch_sysfs_class, MKDEV(SCSI_CHANGER_MAJOR,ch->minor));
+	device_destroy(&ch_sysfs_class, MKDEV(SCSI_CHANGER_MAJOR, ch->minor));
 	scsi_device_put(ch->device);
 	kref_put(&ch->ref, ch_destroy);
 	return 0;
@@ -1000,11 +1005,9 @@ static int __init init_ch_module(void)
 	int rc;
 
 	printk(KERN_INFO "SCSI Media Changer driver v" VERSION " \n");
-        ch_sysfs_class = class_create("scsi_changer");
-        if (IS_ERR(ch_sysfs_class)) {
-		rc = PTR_ERR(ch_sysfs_class);
+	rc = class_register(&ch_sysfs_class);
+	if (rc)
 		return rc;
-        }
 	rc = register_chrdev(SCSI_CHANGER_MAJOR,"ch",&changer_fops);
 	if (rc < 0) {
 		printk("Unable to get major %d for SCSI-Changer\n",
@@ -1019,7 +1022,7 @@ static int __init init_ch_module(void)
  fail2:
 	unregister_chrdev(SCSI_CHANGER_MAJOR, "ch");
  fail1:
-	class_destroy(ch_sysfs_class);
+	class_unregister(&ch_sysfs_class);
 	return rc;
 }
 
@@ -1027,7 +1030,7 @@ static void __exit exit_ch_module(void)
 {
 	scsi_unregister_driver(&ch_template.gendrv);
 	unregister_chrdev(SCSI_CHANGER_MAJOR, "ch");
-	class_destroy(ch_sysfs_class);
+	class_unregister(&ch_sysfs_class);
 	idr_destroy(&ch_index_idr);
 }