Commit c141897c authored by Geert Uytterhoeven's avatar Geert Uytterhoeven
Browse files

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



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

Signed-off-by: default avatarGeert Uytterhoeven <geert+renesas@glider.be>
Acked-by: default avatarStephen Boyd <sboyd@kernel.org>
Reviewed-by: default avatarYoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Tested-by: default avatarYoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://lore.kernel.org/r/20210326120100.1577596-4-geert+renesas@glider.be
parent 58effcd3

drivers/clk/renesas/rcar-gen3-cpg.c

+1 −2
Original line number Diff line number Diff line
@@ -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