From: Jude Shih <shenshih@amd.com>
Date: Wed, 29 Sep 2021 03:13:56 +0000 (+0800)
Subject: drm/amd/display: Fix USB4 Aux via DMUB terminate unexpectedly
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=9e3a50d23e31d9fad2fe47529b3668cc83323762;p=linux.git

drm/amd/display: Fix USB4 Aux via DMUB terminate unexpectedly

[Why]
Condition variable sometimes terminated unexpectedly

[How]
Use wait_for_completion_timeout to avoid unexpected termination of CV

Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Acked-by: Wayne Lin <Wayne.Lin@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Jude Shih <shenshih@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index 85a8148605d3e..b567809ffcc4f 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -11410,8 +11410,9 @@ int amdgpu_dm_process_dmub_aux_transfer_sync(bool is_cmd_aux, struct dc_context
 					(uint32_t *)operation_result);
 	}
 
-	ret = wait_for_completion_interruptible_timeout(&adev->dm.dmub_aux_transfer_done, 10*HZ);
+	ret = wait_for_completion_timeout(&adev->dm.dmub_aux_transfer_done, 10 * HZ);
 	if (ret == 0) {
+		DRM_ERROR("wait_for_completion_timeout timeout!");
 		return amdgpu_dm_set_dmub_async_sync_status(is_cmd_aux,
 				ctx, DMUB_ASYNC_TO_SYNC_ACCESS_TIMEOUT,
 				(uint32_t *)operation_result);