drm/amdgpu: Notify sbios device ready before send request

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 <[email protected]>
Signed-off-by: Rex Zhu <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
Cc: [email protected]

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
index 57afad79f55d086b673cd6c61c688d532620a033..8fa850a070e0fe8ea7a67823008ff7e543d8d1dc 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
@@ -540,6 +540,9 @@ int amdgpu_acpi_pcie_performance_request(struct amdgpu_device *adev,
        size_t size;
        u32 retry = 3;
 
+       if (amdgpu_acpi_pcie_notify_device_ready(adev))
+               return -EINVAL;
+
        /* Get the device handle */
        handle = ACPI_HANDLE(&adev->pdev->dev);
        if (!handle)