3.16.44-rc1 review patch. If anyone has any objections, please let me know.
------------------ From: Nicholas Mc Guire <[email protected]> commit ed784c532a3d0959db488f40a96c5127f63d42dc upstream. 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 <[email protected]> Acked-by: Charles Keepax <[email protected]> Signed-off-by: Stephen Boyd <[email protected]> Signed-off-by: Ben Hutchings <[email protected]> --- drivers/clk/clk-wm831x.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/drivers/clk/clk-wm831x.c +++ b/drivers/clk/clk-wm831x.c @@ -102,7 +102,8 @@ static int wm831x_fll_prepare(struct clk 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; }
