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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>
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@ -110,7 +110,7 @@ static int rcar_pwm_set_counter(struct rcar_pwm_chip *rp, int div, int duty_ns,
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unsigned long clk_rate = clk_get_rate(rp->clk);
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u32 cyc, ph;
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one_cycle = (unsigned long long)NSEC_PER_SEC * 100ULL * (1 << div);
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one_cycle = NSEC_PER_SEC * 100ULL << div;
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do_div(one_cycle, clk_rate);
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tmp = period_ns * 100ULL;
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