Simplify the sysfs code

3 files changed, 15 insertions, 48 deletions

diff --git a/linux-core/drmP.h b/linux-core/drmP.h
index 99e66597..ba289968 100644
--- a/linux-core/drmP.h
+++ b/linux-core/drmP.h
@@ -988,11 +988,8 @@ extern struct drm_sysfs_class *drm_sysfs_create(struct module *owner,
 						char *name);
 extern void drm_sysfs_destroy(struct drm_sysfs_class *cs);
 extern struct class_device *drm_sysfs_device_add(struct drm_sysfs_class *cs,
-						 drm_head_t * head,
-						 dev_t dev,
-						 struct device *device,
-						 const char *fmt, ...);
-extern void drm_sysfs_device_remove(dev_t dev);
+						 drm_head_t * head);
+extern void drm_sysfs_device_remove(struct class_device *class_dev);
 
 /* Inline replacements for DRM_IOREMAP macros */
 static __inline__ void drm_core_ioremap(struct drm_map *map,
diff --git a/linux-core/drm_stub.c b/linux-core/drm_stub.c
index 25af18ba..5496ed89 100644
--- a/linux-core/drm_stub.c
+++ b/linux-core/drm_stub.c
@@ -165,10 +165,7 @@ 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,
-						head, MKDEV(DRM_MAJOR, minor),
-						DRM_PCI_DEV(dev->pdev),
-						"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");
@@ -292,7 +289,7 @@ 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};
 
diff --git a/linux-core/drm_sysfs.c b/linux-core/drm_sysfs.c
index 229b2132..a1faf783 100644
--- a/linux-core/drm_sysfs.c
+++ b/linux-core/drm_sysfs.c
@@ -26,15 +26,11 @@ struct drm_sysfs_class {
 #define to_drm_sysfs_class(d) container_of(d, struct drm_sysfs_class, class)
 
 struct simple_dev {
-	struct list_head node;
 	dev_t dev;
 	struct class_device class_dev;
 };
 #define to_simple_dev(d) container_of(d, struct simple_dev, class_dev)
 
-static LIST_HEAD(simple_dev_list);
-static spinlock_t simple_dev_list_lock = SPIN_LOCK_UNLOCKED;
-
 static void release_simple_dev(struct class_device *class_dev)
 {
 	struct simple_dev *s_dev = to_simple_dev(class_dev);
@@ -148,11 +144,9 @@ static struct class_device_attribute class_device_attrs[] = {
  * Note: the struct drm_sysfs_class passed to this function must have previously been
  * created with a call to drm_sysfs_create().
  */
-struct class_device *drm_sysfs_device_add(struct drm_sysfs_class *cs,
-			drm_head_t * head, dev_t dev,
-			struct device *device, const char *fmt, ...)
+struct class_device *drm_sysfs_device_add(
+			struct drm_sysfs_class *cs, drm_head_t * head)
 {
-	va_list args;
 	struct simple_dev *s_dev = NULL;
 	int i, retval;
 
@@ -168,23 +162,16 @@ struct class_device *drm_sysfs_device_add(struct drm_sysfs_class *cs,
 	}
 	memset(s_dev, 0x00, sizeof(*s_dev));
 
-	s_dev->dev = dev;
-	s_dev->class_dev.dev = device;
+	s_dev->dev = MKDEV(DRM_MAJOR, head->minor);
+	s_dev->class_dev.dev = DRM_PCI_DEV(head->dev->pdev);
 	s_dev->class_dev.class = &cs->class;
 
-	va_start(args, fmt);
-	vsnprintf(s_dev->class_dev.class_id, BUS_ID_SIZE, fmt, args);
-	va_end(args);
+	snprintf(s_dev->class_dev.class_id, BUS_ID_SIZE, "card%d", head->minor);
 	retval = class_device_register(&s_dev->class_dev);
 	if (retval)
 		goto error;
 
 	class_device_create_file(&s_dev->class_dev, &cs->attr);
-
-	spin_lock(&simple_dev_list_lock);
-	list_add(&s_dev->node, &simple_dev_list);
-	spin_unlock(&simple_dev_list_lock);
-
 	class_set_devdata(&s_dev->class_dev, head);
 
 	for (i = 0; i < ARRAY_SIZE(class_device_attrs); i++)
@@ -204,27 +191,13 @@ error:
  * This call unregisters and cleans up a class device that was created with a
  * call to drm_sysfs_device_add()
  */
-void drm_sysfs_device_remove(dev_t dev)
+void drm_sysfs_device_remove(struct class_device *class_dev)
 {
-	struct simple_dev *s_dev = NULL;
-	int i, found = 0;
-
-	spin_lock(&simple_dev_list_lock);
-	list_for_each_entry(s_dev, &simple_dev_list, node) {
-		if (s_dev->dev == dev) {
-			found = 1;
-			break;
-		}
-	}
-	if (found) {
-		list_del(&s_dev->node);
-		spin_unlock(&simple_dev_list_lock);
+	struct simple_dev *s_dev = to_simple_dev(class_dev);
+	int i;
 
-		for (i = 0; i < ARRAY_SIZE(class_device_attrs); i++)
-			class_device_remove_file(&s_dev->class_dev, &class_device_attrs[i]);
+	for (i = 0; i < ARRAY_SIZE(class_device_attrs); i++)
+		class_device_remove_file(&s_dev->class_dev, &class_device_attrs[i]);
 
-		class_device_unregister(&s_dev->class_dev);
-	} else {
-		spin_unlock(&simple_dev_list_lock);
-	}
+	class_device_unregister(&s_dev->class_dev);
 }