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authorLinus Torvalds <torvalds@linux-foundation.org>2016-06-16 17:33:51 -1000
committerLinus Torvalds <torvalds@linux-foundation.org>2016-06-16 17:33:51 -1000
commitbb967271c0317de8eed56b20aae978d31507b033 (patch)
treeb120e82a88dcf00069d3836eafa07502da2794a4 /include
parent2668bc77a102866549784f87693c24e693b195df (diff)
parentcc51846ba81ca179a3be20f6313e3b72531888c1 (diff)
downloadlwn-bb967271c0317de8eed56b20aae978d31507b033.tar.gz
lwn-bb967271c0317de8eed56b20aae978d31507b033.zip
Merge tag 'pwm/for-4.7-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm
Pull pwm fixes from Thierry Reding: "These changes fix a bit of fallout from the introduction of the atomic API" * tag 'pwm/for-4.7-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm: pwm: atmel-hlcdc: Fix default PWM polarity pwm: sysfs: Get return value from pwm_apply_state() pwm: Improve args checking in pwm_apply_state()
Diffstat (limited to 'include')
-rw-r--r--include/linux/pwm.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/pwm.h b/include/linux/pwm.h
index 17018f3c066e..908b67c847cd 100644
--- a/include/linux/pwm.h
+++ b/include/linux/pwm.h
@@ -235,6 +235,9 @@ static inline int pwm_config(struct pwm_device *pwm, int duty_ns,
if (!pwm)
return -EINVAL;
+ if (duty_ns < 0 || period_ns < 0)
+ return -EINVAL;
+
pwm_get_state(pwm, &state);
if (state.duty_cycle == duty_ns && state.period == period_ns)
return 0;