Commit 07d8d8d2 authored by Uwe Kleine-König's avatar Uwe Kleine-König Committed by Thierry Reding
Browse files

pwm: lpc18xx-sct: Fix a comment to match code 



lpc18xx_pwm_probe() only ensures clk_rate <= NSEC_PER_SEC, the following
reasoning is right even under this slightly lesser condition.

Fixes: 8933d30c ("pwm: lpc18xx: Fix period handling")
Acked-by: default avatarVladimir Zapolskiy <vz@mleia.com>
Link: https://lore.kernel.org/r/20221108153013.132514-1-u.kleine-koenig@pengutronix.de


Signed-off-by: default avatarUwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: default avatarThierry Reding <thierry.reding@gmail.com>
parent 0b5ef342

drivers/pwm/pwm-lpc18xx-sct.c

+1 −1
Original line number Diff line number Diff line
@@ -175,7 +175,7 @@ static void lpc18xx_pwm_config_duty(struct pwm_chip *chip, 
	u32 val;



	/*

	 * With clk_rate < NSEC_PER_SEC this cannot overflow.

	 * With clk_rate <= NSEC_PER_SEC this cannot overflow.

	 * With duty_ns <= period_ns < max_period_ns this also fits into an u32.

	 */

	val = mul_u64_u64_div_u64(duty_ns, lpc18xx_pwm->clk_rate, NSEC_PER_SEC);