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authorGeert Uytterhoeven <geert+renesas@glider.be>2022-02-21 19:28:16 +0300
committerThierry Reding <thierry.reding@gmail.com>2022-02-24 17:14:56 +0300
commited14d36498c8d15be098df4af9ca324f96e9de74 (patch)
treefdd5a283dd7686b7266535c6189551e1f809d09a /drivers/pwm
parentf4866732a7b55b8ce65e8ef259e8782cac910653 (diff)
downloadlinux-ed14d36498c8d15be098df4af9ca324f96e9de74.tar.xz
pwm: rcar: Simplify multiplication/shift logic
- 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>
Diffstat (limited to 'drivers/pwm')
-rw-r--r--drivers/pwm/pwm-rcar.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/pwm/pwm-rcar.c b/drivers/pwm/pwm-rcar.c
index b437192380e2..55f46d09602b 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;