diff options
| author | Dan Carpenter | 2023-10-25 14:58:18 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2023-11-28 17:07:03 +0000 |
| commit | 1fb3a9c59e7f7d2b1d737a0d6e02e31d5b516455 (patch) | |
| tree | 145b003da5517b8a8b7f8f00e688bc205024dedd /include/linux | |
| parent | 6586b5f8e456de7bddbed2446f5f558f9035c7ad (diff) | |
pwm: Fix double shift bug
[ Upstream commit d27abbfd4888d79dd24baf50e774631046ac4732 ]
These enums are passed to set/test_bit(). The set/test_bit() functions
take a bit number instead of a shifted value. Passing a shifted value
is a double shift bug like doing BIT(BIT(1)). The double shift bug
doesn't cause a problem here because we are only checking 0 and 1 but
if the value was 5 or above then it can lead to a buffer overflow.
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Sam Protsenko <semen.protsenko@linaro.org>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/pwm.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/pwm.h b/include/linux/pwm.h index 161e91167b9c..5e88f1b59183 100644 --- a/include/linux/pwm.h +++ b/include/linux/pwm.h @@ -41,8 +41,8 @@ struct pwm_args { }; enum { - PWMF_REQUESTED = 1 << 0, - PWMF_EXPORTED = 1 << 1, + PWMF_REQUESTED = 0, + PWMF_EXPORTED = 1, }; /* |