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[3.19.y-ckt,058/196] drm: fix missing reference counting decrease

Message ID 1457483454-30115-59-git-send-email-kamal@canonical.com
State New
Headers show

Commit Message

Kamal Mostafa March 9, 2016, 12:28 a.m. UTC 
3.19.8-ckt16 -stable review patch.  If anyone has any objections, please let me know.

---8<------------------------------------------------------------

From: Insu Yun <wuninsu@gmail.com>

commit dabe19540af9e563d526113bb102e1b9b9fa73f9 upstream.

In drm_dp_mst_allocate_vcpi, it returns true in two paths,
but in one path, there is no reference couting decrease.

Signed-off-by: Insu Yun <wuninsu@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
 drivers/gpu/drm/drm_dp_mst_topology.c | 1 +
 1 file changed, 1 insertion(+)
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Patch

diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c
index 85aebb2..dd63756 100644
--- a/drivers/gpu/drm/drm_dp_mst_topology.c
+++ b/drivers/gpu/drm/drm_dp_mst_topology.c
@@ -2405,6 +2405,7 @@  bool drm_dp_mst_allocate_vcpi(struct drm_dp_mst_topology_mgr *mgr, struct drm_dp
 		DRM_DEBUG_KMS("payload: vcpi %d already allocated for pbn %d - requested pbn %d\n", port->vcpi.vcpi, port->vcpi.pbn, pbn);
 		if (pbn == port->vcpi.pbn) {
 			*slots = port->vcpi.num_slots;
+			drm_dp_put_port(port);
 			return true;
 		}
 	}