drm: simplify sysfs code for drm

This simplifies the sysfs code for the drm and add a dri_library_name
attribute which can be used by a userspace app to figure out which
library to load.

From: Jon Smirl <jonsmirl@gmail.com>
Signed-off-by: Dave Airlie <airlied@linux.ie>

1 files changed, 3 insertions, 8 deletions

diff --git a/drivers/char/drm/drm_stub.c b/drivers/char/drm/drm_stub.c
index 8568a6b373a0..b7f2a851f45c 100644
--- a/drivers/char/drm/drm_stub.c
+++ b/drivers/char/drm/drm_stub.c
@@ -200,11 +200,7 @@ static int drm_get_head(drm_device_t * dev, drm_head_t * head)
                                 goto err_g1;
                         }
 
-                        head->dev_class = drm_sysfs_device_add(drm_class,
-                                                               MKDEV(DRM_MAJOR,
-                                                                     minor),
-                                                               &dev->pdev->dev,
-                                                               "card%d", minor);
+                        head->dev_class = drm_sysfs_device_add(drm_class, head);
                         if (IS_ERR(head->dev_class)) {
                                 printk(KERN_ERR
                                        "DRM: Error sysfs_device_add.\n");
@@ -317,10 +313,9 @@ int drm_put_head(drm_head_t * head)
         DRM_DEBUG("release secondary minor %d\n", minor);
 
         drm_proc_cleanup(minor, drm_proc_root, head->dev_root);
-        drm_sysfs_device_remove(MKDEV(DRM_MAJOR, head->minor));
+        drm_sysfs_device_remove(head->dev_class);
 
-        *head = (drm_head_t) {
-        .dev = NULL};
+        *head = (drm_head_t) {.dev = NULL};
 
         drm_heads[minor] = NULL;