[PATCH 4/9] clk: meson: use frac parameter width instead of a constant

From: Jerome Brunet
Date: Thu Jan 18 2018 - 13:47:09 EST


Use the fractional part width in the calculation instead of 12, which
happens to e the witdh right now. This is safer in case the field width
ever change in the future

Signed-off-by: Jerome Brunet <jbrunet@xxxxxxxxxxxx>
---
drivers/clk/meson/clk-pll.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/clk/meson/clk-pll.c b/drivers/clk/meson/clk-pll.c
index fa4cec13d6e8..d9efe725b7ad 100644
--- a/drivers/clk/meson/clk-pll.c
+++ b/drivers/clk/meson/clk-pll.c
@@ -80,7 +80,7 @@ static unsigned long meson_clk_pll_recalc_rate(struct clk_hw *hw,
reg = readl(pll->base + p->reg_off);
frac = PARM_GET(p->width, p->shift, reg);

- rate += (u64)parent_rate * frac >> 12;
+ rate += (u64)parent_rate * frac >> p->width;
rate *= 2;
}

--
2.14.3