Thread (43 messages) 43 messages, 7 authors, 2015-10-21
STALE3912d
Revisions (6)
  1. v2 [diff vs current]
  2. v3 [diff vs current]
  3. v4 current
  4. v5 [diff vs current]
  5. v6 [diff vs current]
  6. v7 [diff vs current]

[PATCH v4 08/22] regulator: core: Probe regulators on demand

From: Tomeu Vizoso <hidden>
Date: 2015-09-07 12:24:59
Also in: linux-arm-kernel, linux-devicetree, lkml
Subsystem: the rest, voltage and current regulator framework · Maintainers: Linus Torvalds, Liam Girdwood, Mark Brown 

When looking up a regulator 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 v4: None
Changes in v3: None
Changes in v2: None

 drivers/regulator/core.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index f4aa6cae76d5..615133f45c76 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -26,6 +26,7 @@
 #include <linux/gpio.h>
 #include <linux/gpio/consumer.h>
 #include <linux/of.h>
+#include <linux/of_device.h>
 #include <linux/regmap.h>
 #include <linux/regulator/of_regulator.h>
 #include <linux/regulator/consumer.h>
@@ -1340,6 +1341,7 @@ static struct regulator_dev *regulator_dev_lookup(struct device *dev,
 	if (dev && dev->of_node) {
 		node = of_get_regulator(dev, supply);
 		if (node) {
+			of_device_probe(node);
 			mutex_lock(&regulator_list_mutex);
 			list_for_each_entry(r, &regulator_list, list)
 				if (r->dev.parent &&
-- 
2.4.3
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