From: Ville Syrjälä Date: Thu, 16 Oct 2014 18:30:07 +0000 (+0300) Subject: drm/i915: Warn if panel power is already on when enabling it X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=e7a89acea863ffdffa66f4c6cda272eebd893c51;p=linux-beck.git drm/i915: Warn if panel power is already on when enabling it We should never enable the panel power twice. That would indicate a bug somewhere else as we would need to enable the port twice without disabling it in between. Also print the port name. Signed-off-by: Ville Syrjälä Reviewed-by: Imre Deak Signed-off-by: Daniel Vetter --- diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 21fb42241b2f..9db977b475f8 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -1629,10 +1629,10 @@ static void edp_panel_on(struct intel_dp *intel_dp) DRM_DEBUG_KMS("Turn eDP port %c panel power on\n", port_name(dp_to_dig_port(intel_dp)->port)); - if (edp_have_panel_power(intel_dp)) { - DRM_DEBUG_KMS("eDP power already on\n"); + if (WARN(edp_have_panel_power(intel_dp), + "eDP port %c panel power already on\n", + port_name(dp_to_dig_port(intel_dp)->port))) return; - } wait_panel_power_cycle(intel_dp);