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path: root/drivers/scsi/ch.c
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Diffstat (limited to 'drivers/scsi/ch.c')
-rw-r--r--drivers/scsi/ch.c47
1 files changed, 25 insertions, 22 deletions
diff --git a/drivers/scsi/ch.c b/drivers/scsi/ch.c
index 2b864061e0..fa07a6f540 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);
}