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drm/amdgpu: Notify sbios device ready before send request
commit 1bced75f4a
upstream.
it is required if a platform supports PCIe root complex
core voltage reduction. After receiving this notification,
SBIOS can apply default PCIe root complex power policy.
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
parent
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commit
755e5527e5
1 changed files with 3 additions and 0 deletions
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@ -540,6 +540,9 @@ int amdgpu_acpi_pcie_performance_request(struct amdgpu_device *adev,
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size_t size;
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u32 retry = 3;
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if (amdgpu_acpi_pcie_notify_device_ready(adev))
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return -EINVAL;
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/* Get the device handle */
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handle = ACPI_HANDLE(&adev->pdev->dev);
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if (!handle)
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