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@xxxxxxxxx>
---
drivers/thermal/rcar_thermal.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/thermal/rcar_thermal.c b/drivers/thermal/rcar_thermal.c
index d0873de718da9218..a8dd96d2d24c4ce5 100644
--- a/drivers/thermal/rcar_thermal.c
+++ b/drivers/thermal/rcar_thermal.c
@@ -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) {
--
2.17.1
