diff options
| author | Imre Deak <imre.deak@intel.com> | 2024-12-03 18:02:22 +0200 |
|---|---|---|
| committer | Imre Deak <imre.deak@intel.com> | 2024-12-05 16:19:35 +0200 |
| commit | 2b245c97b1af5d8f04c359e0826cb5a5c81ef704 (patch) | |
| tree | 503118e65f9b7b39062302012b4c54f9ba1ea4a6 | |
| parent | e54b00086f7473dbda1a7d6fc47720ced157c6a8 (diff) | |
drm/dp_mst: Reset message rx state after OOM in drm_dp_mst_handle_up_req()
After an out-of-memory error the reception state should be reset, so
that the next attempt receiving a message doesn't fail (due to getting a
start-of-message packet, while the reception state has already the
start-of-message flag set).
Cc: Lyude Paul <lyude@redhat.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241203160223.2926014-7-imre.deak@intel.com
| -rw-r--r-- | drivers/gpu/drm/display/drm_dp_mst_topology.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/gpu/drm/display/drm_dp_mst_topology.c b/drivers/gpu/drm/display/drm_dp_mst_topology.c index 1d1b5f37b007..e5713e3be80e 100644 --- a/drivers/gpu/drm/display/drm_dp_mst_topology.c +++ b/drivers/gpu/drm/display/drm_dp_mst_topology.c @@ -4110,6 +4110,7 @@ static int drm_dp_mst_handle_up_req(struct drm_dp_mst_topology_mgr *mgr) { struct drm_dp_pending_up_req *up_req; struct drm_dp_mst_branch *mst_primary; + int ret = 0; if (!drm_dp_get_one_sb_msg(mgr, true, NULL)) goto out_clear_reply; @@ -4118,8 +4119,10 @@ static int drm_dp_mst_handle_up_req(struct drm_dp_mst_topology_mgr *mgr) return 0; up_req = kzalloc(sizeof(*up_req), GFP_KERNEL); - if (!up_req) - return -ENOMEM; + if (!up_req) { + ret = -ENOMEM; + goto out_clear_reply; + } INIT_LIST_HEAD(&up_req->next); @@ -4186,7 +4189,7 @@ out_put_primary: drm_dp_mst_topology_put_mstb(mst_primary); out_clear_reply: memset(&mgr->up_req_recv, 0, sizeof(struct drm_dp_sideband_msg_rx)); - return 0; + return ret; } static void update_msg_rx_state(struct drm_dp_mst_topology_mgr *mgr) |