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| author | Christian Engelmayer <cengelma@gmx.at> | 2014-01-23 22:32:20 +0100 |
|---|---|---|
| committer | Thierry Reding <thierry.reding@gmail.com> | 2014-02-26 15:45:12 +0100 |
| commit | 0b7d25c347900e2550398e29e25caf0fefe3cab2 (patch) | |
| tree | cb9472bc2278139cfb7a01132810abd8ad5bc8c6 | |
| parent | 38dbfb59d1175ef458d006556061adeaa8751b72 (diff) | |
| download | linux-0b7d25c347900e2550398e29e25caf0fefe3cab2.tar.bz2 | |
pwm: lp3943: Fix potential memory leak during request
Fix a memory leak in the lp3943_pwm_request_map() error handling path.
Make sure already allocated pwm map memory is freed correctly.
Detected by Coverity: CID 1162829.
Signed-off-by: Christian Engelmayer <cengelma@gmx.at>
Acked-by: Milo Kim <milo.kim@ti.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
| -rw-r--r-- | drivers/pwm/pwm-lp3943.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/pwm/pwm-lp3943.c b/drivers/pwm/pwm-lp3943.c index 8a843a04c224..a40b9c34e9ff 100644 --- a/drivers/pwm/pwm-lp3943.c +++ b/drivers/pwm/pwm-lp3943.c @@ -52,8 +52,10 @@ lp3943_pwm_request_map(struct lp3943_pwm *lp3943_pwm, int hwpwm) offset = pwm_map->output[i]; /* Return an error if the pin is already assigned */ - if (test_and_set_bit(offset, &lp3943->pin_used)) + if (test_and_set_bit(offset, &lp3943->pin_used)) { + kfree(pwm_map); return ERR_PTR(-EBUSY); + } } return pwm_map; |