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regmap: return ERR_PTR instead of NULL in regmap_init 

The regmap_init documentation states that it will either return a pointer to a
valid regmap structure or a ERR_PTR in case of an error. Currently it returns a
NULL pointer in case no bus or no config was given. Since NULL is not a
ERR_PTR a caller might assume that it is a pointer to a valid regmap structure,
so return a ERR_PTR(-EINVAL) instead.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Lars-Peter Clausen 2011-11-14 10:40:15 +01:00 committed by Mark Brown
parent 58072cbfc5
commit abbb18fb4a
1 changed files with 1 additions and 1 deletions
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2
drivers/base/regmap/regmap.c
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@ -139,7 +139,7 @@ struct regmap *regmap_init(struct device *dev,
int ret = -EINVAL;
if (!bus || !config)
return NULL;
goto err;
map = kzalloc(sizeof(*map), GFP_KERNEL);
if (map == NULL) {