lpc18xx_pwm_probe() only ensures clk_rate <= NSEC_PER_SEC, the following
reasoning is right even under this slightly lesser condition.
Fixes: 8933d30c5f46 ("pwm: lpc18xx: Fix period handling")
Acked-by: Vladimir Zapolskiy <vz@mleia.com>
Link: https://lore.kernel.org/r/20221108153013.132514-1-u.kleine-koenig@pengutronix.de
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
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);