Thread (30 messages) 30 messages, 4 authors, 2015-09-21
STALE3926d
Revisions (6)
  1. v2 [diff vs current]
  2. v3 [diff vs current]
  3. v4 [diff vs current]
  4. v5 current
  5. v6 [diff vs current]
  6. v7 [diff vs current]

[PATCH v5 17/23] pinctrl: Probe pinctrl devices on demand

From: Tomeu Vizoso <hidden>
Date: 2015-09-17 12:58:22
Also in: linux-acpi, linux-arm-kernel, lkml
Subsystem: pin control subsystem, the rest · Maintainers: Linus Walleij, Linus Torvalds

When looking up a pin controller 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>
---

Changes in v5: None
Changes in v4: None
Changes in v3: None
Changes in v2: None

 drivers/pinctrl/devicetree.c | 3 +++
 1 file changed, 3 insertions(+)
diff --git a/drivers/pinctrl/devicetree.c b/drivers/pinctrl/devicetree.c
index fe04e748dfe4..f5340b8e1dbe 100644
--- a/drivers/pinctrl/devicetree.c
+++ b/drivers/pinctrl/devicetree.c
@@ -18,6 +18,7 @@
 
 #include <linux/device.h>
 #include <linux/of.h>
+#include <linux/of_device.h>
 #include <linux/pinctrl/pinctrl.h>
 #include <linux/slab.h>
 
@@ -110,6 +111,8 @@ static int dt_to_map_one_config(struct pinctrl *p, const char *statename,
 	struct pinctrl_map *map;
 	unsigned num_maps;
 
+	of_device_probe(np_config);
+
 	/* Find the pin controller containing np_config */
 	np_pctldev = of_node_get(np_config);
 	for (;;) {
-- 
2.4.3
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