cdrom: use list_head for cdrom_device_info list

Use list_head for cdrom_device_info list instead of opencoded
singly list handling.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/include/linux/cdrom.h b/include/linux/cdrom.h
index a5cd2047624e..40e05d0a6e45 100644
--- a/include/linux/cdrom.h
+++ b/include/linux/cdrom.h
@@ -910,6 +910,7 @@ struct mode_page_header {
 #ifdef __KERNEL__
 #include <linux/fs.h>           /* not really needed, later.. */
 #include <linux/device.h>
+#include <linux/list.h>
 
 struct packet_command
 {
@@ -934,7 +935,7 @@ struct packet_command
 /* Uniform cdrom data structures for cdrom.c */
 struct cdrom_device_info {
         struct cdrom_device_ops  *ops;  /* link to device_ops */
-        struct cdrom_device_info *next; /* next device_info for this major */
+        struct list_head list;          /* linked list of all device_info */
         struct gendisk *disk;           /* matching block layer disk */
         void *handle;                   /* driver-dependent data */
 /* specifications */