[SCSI] sd: Always do write-protect check

Since nobody has offered an explanation for why the sd driver makes a
write-protect check only for devices with removable media, I'm submitting
this patch to get rid of the removable-media test.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

drivers/scsi/sd.c

@@ -1509,9 +1509,7 @@ static int sd_revalidate_disk(struct gendisk *disk)
 	 */
 	if (sdkp->media_present) {
 		sd_read_capacity(sdkp, disk->disk_name, buffer);
-		if (sdp->removable)
-			sd_read_write_protect_flag(sdkp, disk->disk_name,
-						   buffer);
+		sd_read_write_protect_flag(sdkp, disk->disk_name, buffer);
 		sd_read_cache_type(sdkp, disk->disk_name, buffer);
 	}