drm/omap: Remove connection checks from internal encoders .enable()

The internal encoders return an error from their .enable() handler when
their are not connected to a dss manager. As the flag used is set and
cleared in the connect and disconnect handlers, this effectively checks
whether the omap_dss_device is connected.

The .enable() handler is called from code paths that access the dss
devices chain from the display device, which is set to NULL when the
device isn't connected, making it impossible to access the device in
that case.

The safety check is thus not needed, remove it.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Tested-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

1 files changed, 2 insertions, 18 deletions

diff --git a/drivers/gpu/drm/omapdrm/dss/dsi.c b/drivers/gpu/drm/omapdrm/dss/dsi.c
index 64fb788b6647..c14f8fb2a99b 100644
--- a/drivers/gpu/drm/omapdrm/dss/dsi.c
+++ b/drivers/gpu/drm/omapdrm/dss/dsi.c
@@ -3753,19 +3753,13 @@ static int dsi_enable_video_output(struct omap_dss_device *dssdev, int channel)
 {
 	struct dsi_data *dsi = to_dsi_data(dssdev);
 	int bpp = dsi_get_pixel_size(dsi->pix_fmt);
-	struct omap_dss_device *out = &dsi->output;
 	u8 data_type;
 	u16 word_count;
 	int r;
 
-	if (!out->dispc_channel_connected) {
-		DSSERR("failed to enable display: no output/manager\n");
-		return -ENODEV;
-	}
-
 	r = dsi_display_init_dispc(dsi);
 	if (r)
-		goto err_init_dispc;
+		return r;
 
 	if (dsi->mode == OMAP_DSS_DSI_VIDEO_MODE) {
 		switch (dsi->pix_fmt) {
@@ -3814,7 +3808,6 @@ err_mgr_enable:
 	}
 err_pix_fmt:
 	dsi_display_uninit_dispc(dsi);
-err_init_dispc:
 	return r;
 }
 
@@ -4888,21 +4881,12 @@ static int dsi_get_clocks(struct dsi_data *dsi)
 static int dsi_connect(struct omap_dss_device *src,
 		       struct omap_dss_device *dst)
 {
-	int r;
-
-	r = omapdss_device_connect(dst->dss, dst, dst->next);
-	if (r)
-		return r;
-
-	dst->dispc_channel_connected = true;
-	return 0;
+	return omapdss_device_connect(dst->dss, dst, dst->next);
 }
 
 static void dsi_disconnect(struct omap_dss_device *src,
 			   struct omap_dss_device *dst)
 {
-	dst->dispc_channel_connected = false;
-
 	omapdss_device_disconnect(dst, dst->next);
 }