Thread (70 messages) 70 messages, 13 authors, 2015-10-29
STALE3867d
Revisions (6)
  1. v2 [diff vs current]
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  5. v6 current
  6. v7 [diff vs current]

[PATCH v6 09/22] drm: Probe panels on demand

From: Tomeu Vizoso <hidden>
Date: 2015-09-21 14:03:58
Also in: linux-acpi, linux-arm-kernel, lkml
Subsystem: drm drivers, drm drivers and misc gpu patches, drm panel drivers, the rest · Maintainers: David Airlie, Simona Vetter, Maarten Lankhorst, Maxime Ripard, Thomas Zimmermann, Neil Armstrong, Linus Torvalds

When looking up a panel through its OF node, probe it if it hasn't
already.

The goal is to reduce deferred probes to a minimum, as it makes it very
cumbersome to find out why a device failed to probe, and can introduce
very big delays in when a critical device is probed.

Signed-off-by: Tomeu Vizoso <redacted>
---


 drivers/gpu/drm/drm_panel.c | 3 +++
 1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/drm_panel.c b/drivers/gpu/drm/drm_panel.c
index 2ef988e037b7..ad79a7b9c74d 100644
--- a/drivers/gpu/drm/drm_panel.c
+++ b/drivers/gpu/drm/drm_panel.c
@@ -23,6 +23,7 @@
 
 #include <linux/err.h>
 #include <linux/module.h>
+#include <linux/of_device.h>
 
 #include <drm/drm_crtc.h>
 #include <drm/drm_panel.h>
@@ -80,6 +81,8 @@ struct drm_panel *of_drm_find_panel(struct device_node *np)
 {
 	struct drm_panel *panel;
 
+	of_device_probe(np);
+
 	mutex_lock(&panel_lock);
 
 	list_for_each_entry(panel, &panel_list, list) {
-- 
2.4.3
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