X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fs390%2Fblock%2Fdcssblk.c;h=2aca79e952b0b28e5cba729a90cd1756b4990905;hb=2a0217d5c7d22d6dd28f8ae5d20b06d24dc426b8;hp=01fcdd91b846533a920cc3076c67bf85ca3816c2;hpb=0e2f65ee30eee2db054f7fd73f462c5da33ec963;p=linux-2.6-omap-h63xx.git

diff --git a/drivers/s390/block/dcssblk.c b/drivers/s390/block/dcssblk.c
index 01fcdd91b84..2aca79e952b 100644
--- a/drivers/s390/block/dcssblk.c
+++ b/drivers/s390/block/dcssblk.c
@@ -91,7 +91,7 @@ static struct rw_semaphore dcssblk_devices_sem;
 static void
 dcssblk_release_segment(struct device *dev)
 {
-	PRINT_DEBUG("segment release fn called for %s\n", dev->bus_id);
+	PRINT_DEBUG("segment release fn called for %s\n", dev_name(dev));
 	kfree(container_of(dev, struct dcssblk_dev_info, dev));
 	module_put(THIS_MODULE);
 }
@@ -114,7 +114,7 @@ dcssblk_assign_free_minor(struct dcssblk_dev_info *dev_info)
 		found = 0;
 		// test if minor available
 		list_for_each_entry(entry, &dcssblk_devices, lh)
-			if (minor == entry->gd->first_minor)
+			if (minor == MINOR(disk_devt(entry->gd)))
 				found++;
 		if (!found) break; // got unused minor
 	}
@@ -384,6 +384,11 @@ 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_device_by_name(local_buf)) {
+		up_write(&dcssblk_devices_sem);
+		rc = -EEXIST;
+		goto unload_seg;
+	}
 	rc = dcssblk_assign_free_minor(dev_info);
 	if (rc) {
 		up_write(&dcssblk_devices_sem);
@@ -392,7 +397,7 @@ dcssblk_add_store(struct device *dev, struct device_attribute *attr, const char
 		goto unload_seg;
 	}
 	sprintf(dev_info->gd->disk_name, "dcssblk%d",
-		dev_info->gd->first_minor);
+		MINOR(disk_devt(dev_info->gd)));
 	list_add_tail(&dev_info->lh, &dcssblk_devices);
 
 	if (!try_module_get(THIS_MODULE)) {
@@ -597,7 +602,8 @@ dcssblk_make_request(struct request_queue *q, struct bio *bio)
 		case SEG_TYPE_SC:
 			/* cannot write to these segments */
 			if (bio_data_dir(bio) == WRITE) {
-				PRINT_WARN("rejecting write to ro segment %s\n", dev_info->dev.bus_id);
+				PRINT_WARN("rejecting write to ro segment %s\n",
+					   dev_name(&dev_info->dev));
 				goto fail;
 			}
 		}