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clk: renesas: rcar-gen3: Remove superfluous masking in cpg_z_clk_set_rate()

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Due to the clamping of mult, "(32 - mult) << __ffs(zclk->mask)" can
never exceed the mask.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Stephen Boyd <sboyd@kernel.org>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Tested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://lore.kernel.org/r/20210326120100.1577596-4-geert+renesas@glider.be
This commit is contained in:
Geert Uytterhoeven
2021-03-26 13:00:56 +01:00
parent 58effcd350
commit c141897caa
1 changed files with 1 additions and 2 deletions
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3
drivers/clk/renesas/rcar-gen3-cpg.c
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@@ -104,8 +104,7 @@ static int cpg_z_clk_set_rate(struct clk_hw *hw, unsigned long rate,
if (readl(zclk->kick_reg) & CPG_FRQCRB_KICK)
return -EBUSY;
cpg_reg_modify(zclk->reg, zclk->mask,
((32 - mult) << __ffs(zclk->mask)) & zclk->mask);
cpg_reg_modify(zclk->reg, zclk->mask, (32 - mult) << __ffs(zclk->mask));
/*
* Set KICK bit in FRQCRB to update hardware setting and wait for