drm: Fix framebuffer leak

Do not leak framebuffer if client provided crtc id found invalid.

Signed-off-by: Nikhil Mahale <nmahale@nvidia.com>
Cc: stable@vger.kernel.org
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/1502250781-5779-1-git-send-email-nmahale@nvidia.com

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/gpu/drm/drm_plane.c b/drivers/gpu/drm/drm_plane.c
index 5dc8c4350602..e40c12fabbde 100644
--- a/drivers/gpu/drm/drm_plane.c
+++ b/drivers/gpu/drm/drm_plane.c
@@ -601,6 +601,7 @@ int drm_mode_setplane(struct drm_device *dev, void *data,
 
                 crtc = drm_crtc_find(dev, plane_req->crtc_id);
                 if (!crtc) {
+                        drm_framebuffer_put(fb);
                         DRM_DEBUG_KMS("Unknown crtc ID %d\n",
                                       plane_req->crtc_id);
                         return -ENOENT;