drm/virtgpu: Delete unnecessary checks before drm_gem_object_unreference_unlocked()

The drm_gem_object_unreference_unlocked() function tests whether
its argument is NULL and then returns immediately.
Thus the test around the calls is not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/5e3dafff-72bb-e616-e84a-368f78fa66b1@users.sourceforge.net

diff --git a/drivers/gpu/drm/virtio/virtgpu_display.c b/drivers/gpu/drm/virtio/virtgpu_display.c
index ac758cd..fdfc711 100644 (file)
--- a/drivers/gpu/drm/virtio/virtgpu_display.c
+++ b/drivers/gpu/drm/virtio/virtgpu_display.c
@@ -53,8 +53,7 @@ static void virtio_gpu_user_framebuffer_destroy(struct drm_framebuffer *fb)
        struct virtio_gpu_framebuffer *virtio_gpu_fb
                = to_virtio_gpu_framebuffer(fb);
 
-       if (virtio_gpu_fb->obj)
-               drm_gem_object_unreference_unlocked(virtio_gpu_fb->obj);
+       drm_gem_object_unreference_unlocked(virtio_gpu_fb->obj);
        drm_framebuffer_cleanup(fb);
        kfree(virtio_gpu_fb);
 }
@@ -326,8 +325,7 @@ virtio_gpu_user_framebuffer_create(struct drm_device *dev,
        ret = virtio_gpu_framebuffer_init(dev, virtio_gpu_fb, mode_cmd, obj);
        if (ret) {
                kfree(virtio_gpu_fb);
-               if (obj)
-                       drm_gem_object_unreference_unlocked(obj);
+               drm_gem_object_unreference_unlocked(obj);
                return NULL;
        }