diff options
| author | Sudip Mukherjee <sudipm.mukherjee@gmail.com> | 2015-09-02 13:44:06 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2015-09-02 15:19:04 +0300 |
| commit | 9f8df6adf6c53abfa10e243cb289c34eb18ec581 (patch) | |
| tree | edf72419b52174ef970a8c0925c54560eee881d7 /drivers/regulator | |
| parent | f5164b8833498825b3197cb34150b142a9fc5bbf (diff) | |
| download | linux-9f8df6adf6c53abfa10e243cb289c34eb18ec581.tar.xz | |
regulator: core: fix possible NULL dereference
We were checking rdev->supply for NULL after dereferencing it. Lets
check for rdev->supply along with _regulator_is_enabled() and call
regulator_enable() only if rdev->supply is not NULL.
Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/regulator')
| -rw-r--r-- | drivers/regulator/core.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c index de9f272a0faf..7150ff6ef46b 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -1422,11 +1422,10 @@ static int regulator_resolve_supply(struct regulator_dev *rdev) return ret; /* Cascade always-on state to supply */ - if (_regulator_is_enabled(rdev)) { + if (_regulator_is_enabled(rdev) && rdev->supply) { ret = regulator_enable(rdev->supply); if (ret < 0) { - if (rdev->supply) - _regulator_put(rdev->supply); + _regulator_put(rdev->supply); return ret; } } |