[PATCH v2] drm/amdgpu: don't use BACO for reset in S3

[Alex Deucher]

Seems to cause a reboots or hangs on some systems.

Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1924
Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1953
Fixes: daf8de0874ab5b ("drm/amdgpu: always reset the asic in suspend (v2)")
Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
 drivers/gpu/drm/amd/pm/amdgpu_dpm.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/gpu/drm/amd/pm/amdgpu_dpm.c b/drivers/gpu/drm/amd/pm/amdgpu_dpm.c
index c73fb73e9628..ee62c74685ae 100644
--- a/drivers/gpu/drm/amd/pm/amdgpu_dpm.c
+++ b/drivers/gpu/drm/amd/pm/amdgpu_dpm.c
@@ -173,6 +173,13 @@ bool amdgpu_dpm_is_baco_supported(struct amdgpu_device *adev)
 
 	if (!pp_funcs || !pp_funcs->get_asic_baco_capability)
 		return false;
+	/* Don't use baco for reset in S3.
+	 * This is a workaround for some platforms
+	 * where entering BACO during suspend
+	 * seems to cause reboots or hangs.
+	 */
+	if (adev->in_s3)
+		return false;
 
 	mutex_lock(&adev->pm.mutex);
 
-- 
2.35.1