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authorChristian Engelmayer <cengelma@gmx.at>2014-01-23 22:32:20 +0100
committerThierry Reding <thierry.reding@gmail.com>2014-02-26 15:45:12 +0100
commit0b7d25c347900e2550398e29e25caf0fefe3cab2 (patch)
treecb9472bc2278139cfb7a01132810abd8ad5bc8c6 /drivers/pwm/pwm-lp3943.c
parent38dbfb59d1175ef458d006556061adeaa8751b72 (diff)
downloadlinux-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>
Diffstat (limited to 'drivers/pwm/pwm-lp3943.c')
-rw-r--r--drivers/pwm/pwm-lp3943.c4
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;