ecore-drm: restrict output backlight detection to drm device

previously this would pull in any available backlight device regardless
of whether it was actually attached to the device or output in any way

diff --git a/src/lib/ecore_drm/ecore_drm_output.c b/src/lib/ecore_drm/ecore_drm_output.c
index c07efc6..75b9fcc 100644 (file)
--- a/src/lib/ecore_drm/ecore_drm_output.c
+++ b/src/lib/ecore_drm/ecore_drm_output.c
@@ -327,7 +327,7 @@ _ecore_drm_output_brightness_set(Ecore_Drm_Backlight *backlight, double brightne
 */
 
 static Ecore_Drm_Backlight *
-_ecore_drm_output_backlight_init(Ecore_Drm_Output *output EINA_UNUSED, uint32_t conn_type)
+_ecore_drm_output_backlight_init(Ecore_Drm_Output *output, uint32_t conn_type)
 {
    Ecore_Drm_Backlight *backlight = NULL;
    Ecore_Drm_Backlight_Type type = 0;
@@ -342,6 +342,8 @@ _ecore_drm_output_backlight_init(Ecore_Drm_Output *output EINA_UNUSED, uint32_t
 
    EINA_LIST_FOREACH(devs, l, device)
      {
+        /* ensure this backlight is owned by this output's device */
+        if (strncmp(device, output->dev->drm.path, strlen(output->dev->drm.path))) continue;
         if (!(devtype = eeze_udev_syspath_get_sysattr(device, "type")))
           continue;