Thread (39 messages) 39 messages, 4 authors, 2015-09-15
STALE3934d
Revisions (6)
  1. v2 [diff vs current]
  2. v3 current
  3. v4 [diff vs current]
  4. v5 [diff vs current]
  5. v6 [diff vs current]
  6. v7 [diff vs current]

[PATCH v3 17/18] power-supply: Probe power supplies on demand

From: Tomeu Vizoso <hidden>
Date: 2015-08-06 14:21:49
Also in: linux-acpi, linux-devicetree, lkml
Subsystem: the rest · Maintainer: Linus Torvalds

When looking up a power supply 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 v3: None
Changes in v2: None

 drivers/power/power_supply_core.c | 3 +++
 1 file changed, 3 insertions(+)
diff --git a/drivers/power/power_supply_core.c b/drivers/power/power_supply_core.c
index 456987c88baa..668d71656592 100644
--- a/drivers/power/power_supply_core.c
+++ b/drivers/power/power_supply_core.c
@@ -19,6 +19,7 @@
 #include <linux/err.h>
 #include <linux/power_supply.h>
 #include <linux/thermal.h>
+#include <linux/of_platform.h>
 #include "power_supply.h"
 
 /* exported for the APM Power driver, APM emulation */
@@ -206,6 +207,8 @@ static int power_supply_find_supply_from_node(struct device_node *supply_node)
 {
 	int error;
 
+	of_platform_probe(supply_node);
+
 	/*
 	 * class_for_each_device() either returns its own errors or values
 	 * returned by __power_supply_find_supply_from_node().
-- 
2.4.3
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