[SRU][R][PATCH 07/13] drm/i915/backlight: Check luminance_set when disabling PWM via AUX VESA backlight

[Werner Sembach]

From: Suraj Kandpal <suraj.kandpal at intel.com>

When deciding what if PWM funcs need to be disabled take into account
luminance_set too. We do this since it is also used to decide if
we are enabling PWM backlight funcs or not.

Closes: https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/15671
Signed-off-by: Suraj Kandpal <suraj.kandpal at intel.com>
Reviewed-by: Arun R Murthy <arun.r.murthy at intel.com>
Link: https://patch.msgid.link/20260302040613.3324049-5-suraj.kandpal@intel.com
Signed-off-by: Werner Sembach <wse at tuxedocomputers.com>
---
 drivers/gpu/drm/i915/display/intel_dp_aux_backlight.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/display/intel_dp_aux_backlight.c b/drivers/gpu/drm/i915/display/intel_dp_aux_backlight.c
index b72535f893827..8d7c5089fb1c4 100644
--- a/drivers/gpu/drm/i915/display/intel_dp_aux_backlight.c
+++ b/drivers/gpu/drm/i915/display/intel_dp_aux_backlight.c
@@ -511,7 +511,8 @@ static void intel_dp_aux_vesa_disable_backlight(const struct drm_connector_state
 
 	drm_edp_backlight_disable(&intel_dp->aux, &panel->backlight.edp.vesa.info);
 
-	if (!panel->backlight.edp.vesa.info.aux_enable)
+	if (!(panel->backlight.edp.vesa.info.aux_enable ||
+	      panel->backlight.edp.vesa.info.luminance_set))
 		panel->backlight.pwm_funcs->disable(old_conn_state,
 						    intel_backlight_invert_pwm_level(connector, 0));
 }
-- 
2.43.0