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| author | Heiko Stübner <heiko@sntech.de> | 2011-10-14 18:00:29 +0200 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2011-10-14 20:47:06 +0100 |
| commit | d1685e4e2c3854782272f32b71f2f3eff5c6e0d0 (patch) | |
| tree | f5a3db39e444233ce989216ded33b9542e0a0921 | |
| parent | d162b3c54b206ee64c87651309ed4442846cafbc (diff) | |
| download | lwn-d1685e4e2c3854782272f32b71f2f3eff5c6e0d0.tar.gz lwn-d1685e4e2c3854782272f32b71f2f3eff5c6e0d0.zip | |
regulator: Fix possible nullpointer dereference in regulator_enable()
In the case where _regulator_enable returns an error it was not checked
if a supplying regulator exists before trying to disable it, leading
to a null pointer-dereference if no supplying regulator existed.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
| -rw-r--r-- | drivers/regulator/core.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c index 9a33fe2021b6..87d9328f1695 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -1425,7 +1425,7 @@ int regulator_enable(struct regulator *regulator) ret = _regulator_enable(rdev); mutex_unlock(&rdev->mutex); - if (ret != 0) + if (ret != 0 && rdev->supply) regulator_disable(rdev->supply); return ret; |