drm/radeon/kms: fix regression in hotplug

Skip connectors that do not have an HPD pin.

Should fix:
https://bugs.freedesktop.org/show_bug.cgi?id=39027

Signed-off-by: Alex Deucher <[email protected]>
Tested-by: Rafał Miłecki <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>

diff --git a/drivers/gpu/drm/radeon/radeon_connectors.c b/drivers/gpu/drm/radeon/radeon_connectors.c
index cbfca3a24fdf9caac828d4cca8ce8445963af4c4..9792d4ffdc86250e102457c5bd36765098dde7e3 100644 (file)
--- a/drivers/gpu/drm/radeon/radeon_connectors.c
+++ b/drivers/gpu/drm/radeon/radeon_connectors.c
@@ -52,6 +52,12 @@ void radeon_connector_hotplug(struct drm_connector *connector)
        struct radeon_device *rdev = dev->dev_private;
        struct radeon_connector *radeon_connector = to_radeon_connector(connector);
 
+       /* bail if the connector does not have hpd pin, e.g.,
+        * VGA, TV, etc.
+        */
+       if (radeon_connector->hpd.hpd == RADEON_HPD_NONE)
+               return;
+
        radeon_hpd_set_polarity(rdev, radeon_connector->hpd.hpd);
 
        /* powering up/down the eDP panel generates hpd events which