torvalds/linux
3
0
Fork 0
mirror of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2026-03-31 11:47:42 +08:00
Code Issues Packages Projects Releases Wiki Activity

drm/dp_mst: Fix all mstb marked as not probed after suspend/resume

Browse Source 
[Why]
After supend/resume, with topology unchanged, observe that
link_address_sent of all mstb are marked as false even the topology probing
is done without any error.

It is caused by wrongly also include "ret == 0" case as a probing failure
case.

[How]
Remove inappropriate checking conditions.

Cc: Lyude Paul <lyude@redhat.com>
Cc: Harry Wentland <hwentlan@amd.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Imre Deak <imre.deak@intel.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: stable@vger.kernel.org
Fixes: 37dfdc55ff ("drm/dp_mst: Cleanup drm_dp_send_link_address() a bit")
Signed-off-by: Wayne Lin <Wayne.Lin@amd.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Signed-off-by: Lyude Paul <lyude@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240626084825.878565-2-Wayne.Lin@amd.com
This commit is contained in:
Wayne Lin
2024-06-26 16:48:23 +08:00
committed by Lyude Paul
parent 80f4e62730
commit d63d81094d
1 changed files with 2 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/gpu/drm/display/drm_dp_mst_topology.c
View File

@@ -2929,7 +2929,7 @@ static int drm_dp_send_link_address(struct drm_dp_mst_topology_mgr *mgr,
/* FIXME: Actually do some real error handling here */
ret = drm_dp_mst_wait_tx_reply(mstb, txmsg);
if (ret <= 0) {
if (ret < 0) {
drm_err(mgr->dev, "Sending link address failed with %d\n", ret);
goto out;
}
@@ -2981,7 +2981,7 @@ static int drm_dp_send_link_address(struct drm_dp_mst_topology_mgr *mgr,
mutex_unlock(&mgr->lock);
out:
if (ret <= 0)
if (ret < 0)
mstb->link_address_sent = false;
kfree(txmsg);
return ret < 0 ? ret : changed;