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path: root/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
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Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c')
-rw-r--r--drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
index 130060834b4e..55402d238919 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
@@ -1066,6 +1066,12 @@ bool amdgpu_acpi_is_s0ix_active(struct amdgpu_device *adev)
(pm_suspend_target_state != PM_SUSPEND_TO_IDLE))
return false;
+ /*
+ * If ACPI_FADT_LOW_POWER_S0 is not set in the FADT, it is generally
+ * risky to do any special firmware-related preparations for entering
+ * S0ix even though the system is suspending to idle, so return false
+ * in that case.
+ */
if (!(acpi_gbl_FADT.flags & ACPI_FADT_LOW_POWER_S0)) {
dev_warn_once(adev->dev,
"Power consumption will be higher as BIOS has not been configured for suspend-to-idle.\n"