[Intel-gfx] [PATCH 1/2] drm/i915: Do intel_panel_destroy_backlight() later

[Ville Syrjala]

From: Ville Syrjälä <ville.syrjala at linux.intel.com>

Currently we destroy the backlight during connector unregistration.
That means the final modeset performed by drm_atomic_helper_shutdown()
will leave the backlight on. We don't want that so let's just move
intel_panel_destroy_backlight() into intel_panel_fini() which gets
called during connector destuction.

We still unregister the user visible backlight device during connector
unregistration.

Cc: Jani Nikula <jani.nikula at intel.com>
Cc: Chris Wilson <chris at chris-wilson.co.uk>
Cc: Daniel Vetter <daniel.vetter at ffwll.ch>
Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 drivers/gpu/drm/i915/intel_display.c | 1 -
 drivers/gpu/drm/i915/intel_drv.h     | 1 -
 drivers/gpu/drm/i915/intel_panel.c   | 7 +++----
 3 files changed, 3 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 741fc5b4f9d9..6a7fe89f3145 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -15860,7 +15860,6 @@ void intel_connector_unregister(struct drm_connector *connector)
 	struct intel_connector *intel_connector = to_intel_connector(connector);
 
 	intel_backlight_device_unregister(intel_connector);
-	intel_panel_destroy_backlight(connector);
 }
 
 static void intel_hpd_poll_fini(struct drm_device *dev)
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 7a9f5ee4604f..8050d06c722a 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -1904,7 +1904,6 @@ int intel_panel_setup_backlight(struct drm_connector *connector,
 void intel_panel_enable_backlight(const struct intel_crtc_state *crtc_state,
 				  const struct drm_connector_state *conn_state);
 void intel_panel_disable_backlight(const struct drm_connector_state *old_conn_state);
-void intel_panel_destroy_backlight(struct drm_connector *connector);
 extern struct drm_display_mode *intel_find_panel_downclock(
 				struct drm_i915_private *dev_priv,
 				struct drm_display_mode *fixed_mode,
diff --git a/drivers/gpu/drm/i915/intel_panel.c b/drivers/gpu/drm/i915/intel_panel.c
index 4a9f139e7b73..7df9bcd2bb20 100644
--- a/drivers/gpu/drm/i915/intel_panel.c
+++ b/drivers/gpu/drm/i915/intel_panel.c
@@ -1814,11 +1814,8 @@ int intel_panel_setup_backlight(struct drm_connector *connector, enum pipe pipe)
 	return 0;
 }
 
-void intel_panel_destroy_backlight(struct drm_connector *connector)
+static void intel_panel_destroy_backlight(struct intel_panel *panel)
 {
-	struct intel_connector *intel_connector = to_intel_connector(connector);
-	struct intel_panel *panel = &intel_connector->panel;
-
 	/* dispose of the pwm */
 	if (panel->backlight.pwm)
 		pwm_put(panel->backlight.pwm);
@@ -1923,6 +1920,8 @@ void intel_panel_fini(struct intel_panel *panel)
 	struct intel_connector *intel_connector =
 		container_of(panel, struct intel_connector, panel);
 
+	intel_panel_destroy_backlight(panel);
+
 	if (panel->fixed_mode)
 		drm_mode_destroy(intel_connector->base.dev, panel->fixed_mode);
 
-- 
2.16.4