Commit 74fa02c4 authored by Lijo Lazar's avatar Lijo Lazar Committed by Alex Deucher
Browse files

drm/amdgpu: Fix pci state save during mode-1 reset 



Cache the PCI state before bus master is disabled. The saved state is
later used for other cases like restoring config space after mode-2
reset.

Fixes: 5c03e584 ("drm/amdgpu:add smu mode1/2 support for aldebaran")
Signed-off-by: default avatarLijo Lazar <lijo.lazar@amd.com>
Reviewed-by: default avatarFeifei Xu <Feifei.Xu@amd.com>
Reviewed-by: default avatarHawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent f6f49dda

drivers/gpu/drm/amd/amdgpu/amdgpu_device.c

+5 −2
Original line number Diff line number Diff line
@@ -5220,11 +5220,14 @@ int amdgpu_device_mode1_reset(struct amdgpu_device *adev) 


	dev_info(adev->dev, "GPU mode1 reset\n");



	/* Cache the state before bus master disable. The saved config space

	 * values are used in other cases like restore after mode-2 reset.

	 */

	amdgpu_device_cache_pci_state(adev->pdev);



	/* disable BM */

	pci_clear_master(adev->pdev);



	amdgpu_device_cache_pci_state(adev->pdev);



	if (amdgpu_dpm_is_mode1_reset_supported(adev)) {

		dev_info(adev->dev, "GPU smu mode1 reset\n");

		ret = amdgpu_dpm_mode1_reset(adev);