drm/omap: remove extra manager checks on disconnect

The DSS output drivers check 'dssdev->manager' in disconnect()
functions. This check is not needed as the manager must always be set if
the output device was connected. Remove the check.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

drivers/gpu/drm/omapdrm/dss/dpi.c

@@ -701,8 +701,7 @@ static void dpi_disconnect(struct omap_dss_device *dssdev,
 
 	omapdss_output_unset_device(dssdev);
 
-	if (dssdev->manager)
-		dss_mgr_disconnect(dssdev->manager->id, dssdev);
+	dss_mgr_disconnect(dssdev->manager->id, dssdev);
 }
 
 static const struct omapdss_dpi_ops dpi_ops = {

drivers/gpu/drm/omapdrm/dss/dsi.c

@@ -5019,8 +5019,7 @@ static void dsi_disconnect(struct omap_dss_device *dssdev,
 
 	omapdss_output_unset_device(dssdev);
 
-	if (dssdev->manager)
-		dss_mgr_disconnect(dssdev->manager->id, dssdev);
+	dss_mgr_disconnect(dssdev->manager->id, dssdev);
 }
 
 static const struct omapdss_dsi_ops dsi_ops = {

drivers/gpu/drm/omapdrm/dss/hdmi4.c

@@ -474,8 +474,7 @@ static void hdmi_disconnect(struct omap_dss_device *dssdev,
 
 	omapdss_output_unset_device(dssdev);
 
-	if (dssdev->manager)
-		dss_mgr_disconnect(dssdev->manager->id, dssdev);
+	dss_mgr_disconnect(dssdev->manager->id, dssdev);
 }
 
 static int hdmi_read_edid(struct omap_dss_device *dssdev,

drivers/gpu/drm/omapdrm/dss/hdmi5.c

@@ -500,8 +500,7 @@ static void hdmi_disconnect(struct omap_dss_device *dssdev,
 
 	omapdss_output_unset_device(dssdev);
 
-	if (dssdev->manager)
-		dss_mgr_disconnect(dssdev->manager->id, dssdev);
+	dss_mgr_disconnect(dssdev->manager->id, dssdev);
 }
 
 static int hdmi_read_edid(struct omap_dss_device *dssdev,

drivers/gpu/drm/omapdrm/dss/sdi.c

@@ -316,8 +316,7 @@ static void sdi_disconnect(struct omap_dss_device *dssdev,
 
 	omapdss_output_unset_device(dssdev);
 
-	if (dssdev->manager)
-		dss_mgr_disconnect(dssdev->manager->id, dssdev);
+	dss_mgr_disconnect(dssdev->manager->id, dssdev);
 }
 
 static const struct omapdss_sdi_ops sdi_ops = {

drivers/gpu/drm/omapdrm/dss/venc.c

@@ -778,8 +778,7 @@ static void venc_disconnect(struct omap_dss_device *dssdev,
 
 	omapdss_output_unset_device(dssdev);
 
-	if (dssdev->manager)
-		dss_mgr_disconnect(dssdev->manager->id, dssdev);
+	dss_mgr_disconnect(dssdev->manager->id, dssdev);
 }
 
 static const struct omapdss_atv_ops venc_ops = {