[RFCv1 20/42] drm/omap: dsi: drop useless sync()

[Sebastian Reichel]

The DSI sync() function only locks the bus and then releases
it again. Currently the only invocation is directly before
update(), which locks the bus anyways.

Signed-off-by: Sebastian Reichel <sebastian.reichel at collabora.com>
---
 .../gpu/drm/omapdrm/displays/panel-dsi-cm.c    | 18 ------------------
 drivers/gpu/drm/omapdrm/dss/omapdss.h          |  1 -
 drivers/gpu/drm/omapdrm/omap_crtc.c            |  3 ---
 3 files changed, 22 deletions(-)

diff --git a/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c b/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c
index 164f3a30d7f2..994880022d0c 100644
--- a/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c
+++ b/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c
@@ -845,23 +845,6 @@ static int dsicm_update(struct omap_dss_device *dssdev,
 	return r;
 }
 
-static int dsicm_sync(struct omap_dss_device *dssdev)
-{
-	struct panel_drv_data *ddata = to_panel_data(dssdev);
-	struct omap_dss_device *src = ddata->src;
-
-	dev_dbg(&ddata->dsi->dev, "sync\n");
-
-	mutex_lock(&ddata->lock);
-	src->ops->dsi.bus_lock(src);
-	src->ops->dsi.bus_unlock(src);
-	mutex_unlock(&ddata->lock);
-
-	dev_dbg(&ddata->dsi->dev, "sync done\n");
-
-	return 0;
-}
-
 static int _dsicm_enable_te(struct panel_drv_data *ddata, bool enable)
 {
 	struct omap_dss_device *src = ddata->src;
@@ -950,7 +933,6 @@ static const struct omap_dss_device_ops dsicm_ops = {
 
 static const struct omap_dss_driver dsicm_dss_driver = {
 	.update		= dsicm_update,
-	.sync		= dsicm_sync,
 };
 
 static int dsicm_probe_of(struct mipi_dsi_device *dsi)
diff --git a/drivers/gpu/drm/omapdrm/dss/omapdss.h b/drivers/gpu/drm/omapdrm/dss/omapdss.h
index bc583346af4d..cd9769711b58 100644
--- a/drivers/gpu/drm/omapdrm/dss/omapdss.h
+++ b/drivers/gpu/drm/omapdrm/dss/omapdss.h
@@ -409,7 +409,6 @@ struct omap_dss_device {
 struct omap_dss_driver {
 	int (*update)(struct omap_dss_device *dssdev,
 			       u16 x, u16 y, u16 w, u16 h);
-	int (*sync)(struct omap_dss_device *dssdev);
 };
 
 struct dss_device *omapdss_get_dss(void);
diff --git a/drivers/gpu/drm/omapdrm/omap_crtc.c b/drivers/gpu/drm/omapdrm/omap_crtc.c
index 3c5ddbf30e97..8b469eaa5005 100644
--- a/drivers/gpu/drm/omapdrm/omap_crtc.c
+++ b/drivers/gpu/drm/omapdrm/omap_crtc.c
@@ -379,9 +379,6 @@ static void omap_crtc_manual_display_update(struct work_struct *data)
 		return;
 	}
 
-	if (dssdrv->sync)
-		dssdrv->sync(dssdev);
-
 	ret = dssdrv->update(dssdev, 0, 0, mode->hdisplay, mode->vdisplay);
 	if (ret < 0) {
 		spin_lock_irq(&dev->event_lock);
-- 
2.24.0