From: Nicholas Mc Guire Date: Mon, 12 Dec 2016 07:40:09 +0000 (+0100) Subject: clk: wm831x: fix usleep_range with bad range X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=ed784c532a3d0959db488f40a96c5127f63d42dc;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git clk: wm831x: fix usleep_range with bad range The delay here is not in atomic context and does not seem critical with respect to precision, but usleep_range(min,max) with min==max results in giving the timer subsystem no room to optimize uncritical delays. Fix this by setting the range to 2000,3000 us. Fixes: commit f05259a6ffa4 ("clk: wm831x: Add initial WM831x clock driver") Signed-off-by: Nicholas Mc Guire Acked-by: Charles Keepax Signed-off-by: Stephen Boyd --- diff --git a/drivers/clk/clk-wm831x.c b/drivers/clk/clk-wm831x.c index 0621fbfb4beb..a47960aacfa5 100644 --- a/drivers/clk/clk-wm831x.c +++ b/drivers/clk/clk-wm831x.c @@ -97,7 +97,8 @@ static int wm831x_fll_prepare(struct clk_hw *hw) if (ret != 0) dev_crit(wm831x->dev, "Failed to enable FLL: %d\n", ret); - usleep_range(2000, 2000); + /* wait 2-3 ms for new frequency taking effect */ + usleep_range(2000, 3000); return ret; }