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authorCharles Keepax <ckeepax@opensource.wolfsonmicro.com>2014-04-15 13:34:36 +0100
committerMark Brown <broonie@linaro.org>2014-04-18 18:12:09 +0100
commit13b3fde808ed287ad23c4549733fb3e3be785114 (patch)
treefce1d427a3085afb892258205a3df83a5dfef70a /drivers/regulator/of_regulator.c
parent5efe144681c183e1ca7b0053ad1113667aa7fde2 (diff)
downloadlinux-13b3fde808ed287ad23c4549733fb3e3be785114.tar.bz2
regulator: core: Use devres for releasing of_regulator_match of_nodes
Rather than requiring individual drivers to put the of_nodes returned from of_regulator_match use devres to put them. This also has the benefit it makes the life-time of the of_nodes match the lifetime of the init data also contained in the of_regulator_match structure, which seems more consistent. Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com> Signed-off-by: Mark Brown <broonie@linaro.org>
Diffstat (limited to 'drivers/regulator/of_regulator.c')
-rw-r--r--drivers/regulator/of_regulator.c47
1 files changed, 26 insertions, 21 deletions
diff --git a/drivers/regulator/of_regulator.c b/drivers/regulator/of_regulator.c
index 188e0cb10d03..4672cd2f4632 100644
--- a/drivers/regulator/of_regulator.c
+++ b/drivers/regulator/of_regulator.c
@@ -106,6 +106,20 @@ struct regulator_init_data *of_get_regulator_init_data(struct device *dev,
}
EXPORT_SYMBOL_GPL(of_get_regulator_init_data);
+struct devm_of_regulator_matches {
+ struct of_regulator_match *matches;
+ unsigned int num_matches;
+};
+
+static void devm_of_regulator_put_matches(struct device *dev, void *res)
+{
+ struct devm_of_regulator_matches *devm_matches = res;
+ int i;
+
+ for (i = 0; i < devm_matches->num_matches; i++)
+ of_node_put(devm_matches->matches[i].of_node);
+}
+
/**
* of_regulator_match - extract multiple regulator init data from device tree.
* @dev: device requesting the data
@@ -132,10 +146,22 @@ int of_regulator_match(struct device *dev, struct device_node *node,
unsigned int i;
const char *name;
struct device_node *child;
+ struct devm_of_regulator_matches *devm_matches;
if (!dev || !node)
return -EINVAL;
+ devm_matches = devres_alloc(devm_of_regulator_put_matches,
+ sizeof(struct devm_of_regulator_matches),
+ GFP_KERNEL);
+ if (!devm_matches)
+ return -ENOMEM;
+
+ devm_matches->matches = matches;
+ devm_matches->num_matches = num_matches;
+
+ devres_add(dev, devm_matches);
+
for (i = 0; i < num_matches; i++) {
struct of_regulator_match *match = &matches[i];
match->init_data = NULL;
@@ -172,24 +198,3 @@ int of_regulator_match(struct device *dev, struct device_node *node,
return count;
}
EXPORT_SYMBOL_GPL(of_regulator_match);
-
-/**
- * of_regulator_put_match - put the of_node references from an
- * of_regulator_match structure
- * @matches: match table for the regulators
- * @num_matches: number of entries in match table
- *
- * This function goes through a match table and calls of_node_put on each
- * of_node.
- */
-int of_regulator_put_match(struct of_regulator_match *matches,
- unsigned int num_matches)
-{
- int i;
-
- for (i = 0; i < num_matches; i++)
- of_node_put(matches[i].of_node);
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(of_regulator_put_match);