Commit 263c8c4c authored Jan 15, 2020 by Geert Uytterhoeven Committed by Daniel Lezcano Jan 27, 2020

thermal: rcar_thermal: Use usleep_range() instead of udelay()

rcar_thermal_update_temp() takes a mutex, so it is always called in a
context that can sleep. Hence replace the 300 µs busy loop by a call to
usleep_range(), to allow other threads to run.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20200115125417.5263-1-geert+renesas@glider.be

parent 1a90e732

drivers/thermal/rcar_thermal.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -219,7 +219,7 @@ static int rcar_thermal_update_temp(struct rcar_thermal_priv *priv)
		* to get stable temperature.
		* see "Usage Notes" on datasheet
		*/
		udelay(300);
		usleep_range(300, 400);

		new = rcar_thermal_read(priv, THSSR) & CTEMP;
		if (new == old) {