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drm/amdgpu: revert "fix system hang issue during GPU reset"

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The whole approach wasn't thought through till the end.

We already had a reset lock like this in the past and it caused the same problems like this one.

Completely revert the patch for now and add individual trylock protection to the hardware access functions as necessary.

This reverts commit df9c8d1aa2.

Signed-off-by: Christian König <christian.koenig@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Christian König
2020-08-12 17:48:26 +02:00
committed by Alex Deucher
parent 05f39286ce
commit f1403342eb
39 changed files with 184 additions and 469 deletions
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4
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
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@@ -1658,7 +1658,7 @@ static int dm_suspend(void *handle)
struct amdgpu_display_manager *dm = &adev->dm;
int ret = 0;
if (amdgpu_in_reset(adev)) {
if (adev->in_gpu_reset) {
mutex_lock(&dm->dc_lock);
dm->cached_dc_state = dc_copy_state(dm->dc->current_state);
@@ -1844,7 +1844,7 @@ static int dm_resume(void *handle)
struct dc_state *dc_state;
int i, r, j;
if (amdgpu_in_reset(adev)) {
if (adev->in_gpu_reset) {
dc_state = dm->cached_dc_state;
r = dm_dmub_hw_init(adev);