X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=drivers%2Fs390%2Fblock%2Fdcssblk.c;h=db85f1fb131e0494dfb3e7a4838b23c269d9d36b;hb=04f64b5756872b474d9429e3b6987ada10bb8012;hp=01fcdd91b846533a920cc3076c67bf85ca3816c2;hpb=af5329cdf51cdd208a323e521faa46800a16d2ec;p=firefly-linux-kernel-4.4.55.git

diff --git a/drivers/s390/block/dcssblk.c b/drivers/s390/block/dcssblk.c
index 01fcdd91b846..db85f1fb131e 100644
--- a/drivers/s390/block/dcssblk.c
+++ b/drivers/s390/block/dcssblk.c
@@ -384,6 +384,10 @@ dcssblk_add_store(struct device *dev, struct device_attribute *attr, const char
 	 * get minor, add to list
 	 */
 	down_write(&dcssblk_devices_sem);
+	if (dcssblk_get_segment_by_name(local_buf)) {
+		rc = -EEXIST;
+		goto release_gd;
+	}
 	rc = dcssblk_assign_free_minor(dev_info);
 	if (rc) {
 		up_write(&dcssblk_devices_sem);