1 files changed, 18 insertions, 15 deletions

diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index d57566b..4970ae4 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);