drm: make kernel context switch same as for drm git tree.

Signed-off-by: NDave Airlie <airlied@linux.ie>

drivers/char/drm/drmP.h

@@ -561,8 +561,7 @@ struct drm_driver {
 	int (*context_dtor) (struct drm_device * dev, int context);
 	int (*kernel_context_switch) (struct drm_device * dev, int old,
 				      int new);
-	void (*kernel_context_switch_unlock) (struct drm_device * dev,
-					      drm_lock_t *lock);
+	void (*kernel_context_switch_unlock) (struct drm_device * dev);
 	int (*vblank_wait) (struct drm_device * dev, unsigned int *sequence);
 	int (*vblank_wait2) (struct drm_device * dev, unsigned int *sequence);
 	int (*dri_library_name) (struct drm_device *dev, char *buf);

drivers/char/drm/drm_lock.c

@@ -182,7 +182,7 @@ int drm_unlock(struct inode *inode, struct file *filp,
 	 * modules but is required by the Sparc driver.
 	 */
 	if (dev->driver->kernel_context_switch_unlock)
-		dev->driver->kernel_context_switch_unlock(dev, &lock);
+		dev->driver->kernel_context_switch_unlock(dev);
 	else {
 		drm_lock_transfer(dev, &dev->lock.hw_lock->lock,
 				  DRM_KERNEL_CONTEXT);