drm/radeon/runpm: don't runtime suspend non-PX cards

Prevent runtime suspend of non-PX GPUs.  Runtime suspend is
not what we want in those cases.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/gpu/drm/radeon/radeon_drv.c b/drivers/gpu/drm/radeon/radeon_drv.c
index 1235a78fbba1..ec8c388eec17 100644
--- a/drivers/gpu/drm/radeon/radeon_drv.c
+++ b/drivers/gpu/drm/radeon/radeon_drv.c
@@ -405,6 +405,9 @@ static int radeon_pmops_runtime_suspend(struct device *dev)
         if (radeon_runtime_pm == 0)
                 return -EINVAL;
 
+        if (radeon_runtime_pm == -1 && !radeon_is_px())
+                return -EINVAL;
+
         drm_dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
         drm_kms_helper_poll_disable(drm_dev);
         vga_switcheroo_set_dynamic_switch(pdev, VGA_SWITCHEROO_OFF);
@@ -427,6 +430,9 @@ static int radeon_pmops_runtime_resume(struct device *dev)
         if (radeon_runtime_pm == 0)
                 return -EINVAL;
 
+        if (radeon_runtime_pm == -1 && !radeon_is_px())
+                return -EINVAL;
+
         drm_dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
 
         pci_set_power_state(pdev, PCI_D0);