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

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[ Upstream commit 74fa02c4a5ea1ade5156a6ce494d3ea83881c2d8 ]

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: 5c03e5843e ("drm/amdgpu:add smu mode1/2 support for aldebaran")
Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Feifei Xu <Feifei.Xu@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Lijo Lazar 2024-06-18 14:04:38 +05:30 committed by Greg Kroah-Hartman
parent 87a2448efc
commit 09f64e7ad7
1 changed files with 5 additions and 2 deletions
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7
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
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@ -4763,11 +4763,14 @@ 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);