md/linear: standardise all printk messages

  md/linear:mdname:
Signed-off-by: NeilBrown <neilb@suse.de>

drivers/md/linear.c

@@ -158,7 +158,8 @@ static linear_conf_t *linear_conf(mddev_t *mddev, int raid_disks)
 		sector_t sectors;
 
 		if (j < 0 || j >= raid_disks || disk->rdev) {
-			printk("linear: disk numbering problem. Aborting!\n");
+			printk(KERN_ERR "md/linear:%s: disk numbering problem. Aborting!\n",
+			       mdname(mddev));
 			goto out;
 		}
 
@@ -186,7 +187,8 @@ static linear_conf_t *linear_conf(mddev_t *mddev, int raid_disks)
 
 	}
 	if (cnt != raid_disks) {
-		printk("linear: not enough drives present. Aborting!\n");
+		printk(KERN_ERR "md/linear:%s: not enough drives present. Aborting!\n",
+		       mdname(mddev));
 		goto out;
 	}
 
@@ -305,8 +307,10 @@ static int linear_make_request (mddev_t *mddev, struct bio *bio)
 		     || (bio->bi_sector < start_sector))) {
 		char b[BDEVNAME_SIZE];
 
-		printk("linear_make_request: Sector %llu out of bounds on "
+		printk(KERN_ERR
+		       "md/linear:%s: make_request: Sector %llu out of bounds on "
 		       "dev %s: %llu sectors, offset %llu\n",
+		       mdname(mddev),
 		       (unsigned long long)bio->bi_sector,
 		       bdevname(tmp_dev->rdev->bdev, b),
 		       (unsigned long long)tmp_dev->rdev->sectors,