diff options
| author | Geert Uytterhoeven <geert+renesas@glider.be> | 2020-01-15 15:54:17 +0300 |
|---|---|---|
| committer | Daniel Lezcano <daniel.lezcano@linaro.org> | 2020-01-27 13:41:08 +0300 |
| commit | 263c8c4c76d9da63f1f8805ac5fc62a270448301 (patch) | |
| tree | be79ab2721145e884ef496ab17ea3c4ceba3b7cb /drivers/thermal/rcar_thermal.c | |
| parent | 1a90e73248c4d0add6583bd88bb5e082c3e090bc (diff) | |
| download | linux-263c8c4c76d9da63f1f8805ac5fc62a270448301.tar.xz | |
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
Diffstat (limited to 'drivers/thermal/rcar_thermal.c')
| -rw-r--r-- | drivers/thermal/rcar_thermal.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/thermal/rcar_thermal.c b/drivers/thermal/rcar_thermal.c index d0873de718da..a8dd96d2d24c 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) { |