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[PATCHv4,23/29] drm/omap: display: Add displays in sorted order to the panel_list

Message ID 1490872529-23084-24-git-send-email-tomi.valkeinen@ti.com (mailing list archive)
State New, archived
Headers show

Commit Message

Tomi Valkeinen March 30, 2017, 11:15 a.m. UTC 
From: Peter Ujfalusi <peter.ujfalusi@ti.com>

Keep the panel_list ordered according to aliases. The DRM connectors will
be created following the panel_list. By keeping the list ordered the DRM
connectors will be created in the same order regardless of the driver
probe order.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
---
 drivers/gpu/drm/omapdrm/dss/display.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)
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Patch

diff --git a/drivers/gpu/drm/omapdrm/dss/display.c b/drivers/gpu/drm/omapdrm/dss/display.c
index 94c012e0584b..26cb59be045e 100644
--- a/drivers/gpu/drm/omapdrm/dss/display.c
+++ b/drivers/gpu/drm/omapdrm/dss/display.c
@@ -83,6 +83,7 @@  static int disp_num_counter;
 int omapdss_register_display(struct omap_dss_device *dssdev)
 {
 	struct omap_dss_driver *drv = dssdev->driver;
+	struct list_head *cur;
 	int id;
 
 	/*
@@ -118,7 +119,14 @@  int omapdss_register_display(struct omap_dss_device *dssdev)
 		drv->get_timings = omapdss_default_get_timings;
 
 	mutex_lock(&panel_list_mutex);
-	list_add_tail(&dssdev->panel_list, &panel_list);
+	list_for_each(cur, &panel_list) {
+		struct omap_dss_device *ldev = list_entry(cur,
+							 struct omap_dss_device,
+							 panel_list);
+		if (strcmp(ldev->alias, dssdev->alias) > 0)
+			break;
+	}
+	list_add_tail(&dssdev->panel_list, cur);
 	mutex_unlock(&panel_list_mutex);
 	return 0;
 }