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path: root/drivers/scsi/sd.c
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Diffstat (limited to 'drivers/scsi/sd.c')
-rw-r--r--drivers/scsi/sd.c33
1 files changed, 18 insertions, 15 deletions
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index d57566b8be0..4970ae4a62d 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -107,6 +107,7 @@ static void scsi_disk_release(struct device *cdev);
static void sd_print_sense_hdr(struct scsi_disk *, struct scsi_sense_hdr *);
static void sd_print_result(struct scsi_disk *, int);
+static DEFINE_SPINLOCK(sd_index_lock);
static DEFINE_IDA(sd_index_ida);
/* This semaphore is used to mediate the 0->1 reference get in the
@@ -1166,23 +1167,19 @@ sd_spinup_disk(struct scsi_disk *sdkp)
/*
* The device does not want the automatic start to be issued.
*/
- if (sdkp->device->no_start_on_add) {
+ if (sdkp->device->no_start_on_add)
break;
- }
-
- /*
- * If manual intervention is required, or this is an
- * absent USB storage device, a spinup is meaningless.
- */
- if (sense_valid &&
- sshdr.sense_key == NOT_READY &&
- sshdr.asc == 4 && sshdr.ascq == 3) {
- break; /* manual intervention required */
- /*
- * Issue command to spin up drive when not ready
- */
- } else if (sense_valid && sshdr.sense_key == NOT_READY) {
+ if (sense_valid && sshdr.sense_key == NOT_READY) {
+ if (sshdr.asc == 4 && sshdr.ascq == 3)
+ break; /* manual intervention required */
+ if (sshdr.asc == 4 && sshdr.ascq == 0xb)
+ break; /* standby */
+ if (sshdr.asc == 4 && sshdr.ascq == 0xc)
+ break; /* unavailable */
+ /*
+ * Issue command to spin up drive when not ready
+ */
if (!spintime) {
sd_printk(KERN_NOTICE, sdkp, "Spinning up disk...");
cmd[0] = START_STOP;
@@ -1914,7 +1911,9 @@ static int sd_probe(struct device *dev)
if (!ida_pre_get(&sd_index_ida, GFP_KERNEL))
goto out_put;
+ spin_lock(&sd_index_lock);
error = ida_get_new(&sd_index_ida, &index);
+ spin_unlock(&sd_index_lock);
} while (error == -EAGAIN);
if (error)
@@ -1936,7 +1935,9 @@ static int sd_probe(struct device *dev)
return 0;
out_free_index:
+ spin_lock(&sd_index_lock);
ida_remove(&sd_index_ida, index);
+ spin_unlock(&sd_index_lock);
out_put:
put_disk(gd);
out_free:
@@ -1986,7 +1987,9 @@ static void scsi_disk_release(struct device *dev)
struct scsi_disk *sdkp = to_scsi_disk(dev);
struct gendisk *disk = sdkp->disk;
+ spin_lock(&sd_index_lock);
ida_remove(&sd_index_ida, sdkp->index);
+ spin_unlock(&sd_index_lock);
disk->private_data = NULL;
put_disk(disk);