drm: cleanup exit path for module unload

The current sub-module unload exit path is a mess, it tries
to abuse the idr. Just keep a list of devices per driver struct
and free them in-order on rmmod.

Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/include/drm/drmP.h b/include/drm/drmP.h
index d5e8e5c89548..08b8539e7b3c 100644
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -737,6 +737,8 @@ struct drm_driver {
         int num_ioctls;
         struct file_operations fops;
         struct pci_driver pci_driver;
+        /* List of devices hanging off this driver */
+        struct list_head device_list;
 };
 
 #define DRM_MINOR_UNASSIGNED 0
@@ -759,6 +761,7 @@ struct drm_minor {
  * may contain multiple heads.
  */
 struct drm_device {
+        struct list_head driver_item;   /**< list of devices per driver */
         char *unique;                   /**< Unique identifier: e.g., busid */
         int unique_len;                 /**< Length of unique field */
         char *devname;                  /**< For /proc/interrupts */