5.15-stable review patch. If anyone has any objections, please let me know.
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From: Geert Uytterhoeven geert+renesas@glider.be
[ Upstream commit ed14d36498c8d15be098df4af9ca324f96e9de74 ]
- Remove the superfluous cast; the multiplication will yield a 64-bit result due to the "100ULL" anyway, - "a * (1 << b)" == "a << b".
Signed-off-by: Geert Uytterhoeven geert+renesas@glider.be Reviewed-by: Uwe Kleine-König u.kleine-koenig@pengutronix.de Signed-off-by: Thierry Reding thierry.reding@gmail.com Stable-dep-of: e7327c193014 ("pwm: rcar: Improve register calculation") Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/pwm/pwm-rcar.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/pwm/pwm-rcar.c b/drivers/pwm/pwm-rcar.c index b437192380e23..55f46d09602b1 100644 --- a/drivers/pwm/pwm-rcar.c +++ b/drivers/pwm/pwm-rcar.c @@ -110,7 +110,7 @@ static int rcar_pwm_set_counter(struct rcar_pwm_chip *rp, int div, int duty_ns, unsigned long clk_rate = clk_get_rate(rp->clk); u32 cyc, ph;
- one_cycle = (unsigned long long)NSEC_PER_SEC * 100ULL * (1 << div); + one_cycle = NSEC_PER_SEC * 100ULL << div; do_div(one_cycle, clk_rate);
tmp = period_ns * 100ULL;