Messages in this thread Patch in this message | | | From | Lee Jones <> | Subject | [PATCH 2/4] pwm: bcm-kona: Remove impossible comparison when validating duty cycle | Date | Mon, 29 Jun 2020 13:47:50 +0100 |
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'dc' here is an unsigned long, thus checking for <0 will always evaluate to false.
Fixes the following W=1 warning:
drivers/pwm/pwm-bcm-kona.c:141:35: warning: comparison of unsigned expression < 0 is always false [-Wtype-limits]
Cc: Florian Fainelli <f.fainelli@gmail.com> Cc: Ray Jui <rjui@broadcom.com> Cc: Scott Branden <sbranden@broadcom.com> Cc: bcm-kernel-feedback-list@broadcom.com Cc: linux-pwm@vger.kernel.org Signed-off-by: Lee Jones <lee.jones@linaro.org> --- drivers/pwm/pwm-bcm-kona.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/pwm/pwm-bcm-kona.c b/drivers/pwm/pwm-bcm-kona.c index 81da91df2529a..16c5898b934a8 100644 --- a/drivers/pwm/pwm-bcm-kona.c +++ b/drivers/pwm/pwm-bcm-kona.c @@ -138,7 +138,7 @@ static int kona_pwmc_config(struct pwm_chip *chip, struct pwm_device *pwm, dc = div64_u64(val, div); /* If duty_ns or period_ns are not achievable then return */ - if (pc < PERIOD_COUNT_MIN || dc < DUTY_CYCLE_HIGH_MIN) + if (pc < PERIOD_COUNT_MIN) return -EINVAL; /* If pc and dc are in bounds, the calculation is done */ -- 2.25.1
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