ASoC: rt1011: add the range check for temperature_calib from device property

The driver will check the range for temperature_calib.
It should be from 1 to 255.

Signed-off-by: Shuming Fan <shumingf@realtek.com>
Link: https://lore.kernel.org/r/20191031115436.21055-1-shumingf@realtek.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/codecs/rt1011.c b/sound/soc/codecs/rt1011.c
index 2f1de93..f2c581b 100644 (file)
--- a/sound/soc/codecs/rt1011.c
+++ b/sound/soc/codecs/rt1011.c
@@ -2341,7 +2341,8 @@ static void rt1011_calibration_work(struct work_struct *work)
        rt1011_reg_init(component);
 
        /* Apply temperature and calibration data from device property */
-       if (rt1011->temperature_calib) {
+       if (rt1011->temperature_calib <= 0xff &&
+               rt1011->temperature_calib > 0) {
                snd_soc_component_update_bits(component,
                        RT1011_STP_INITIAL_RESISTANCE_TEMP, 0x3ff,
                        (rt1011->temperature_calib << 2));