X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=sound%2Fsoc%2Fcodecs%2Frt5645.c;h=27141e2df878a65204fc31cc9486fb099319bd26;hb=0d76091ca89d6094b52d442db39f61c896207256;hp=a7789a8726e34615b66eeefa639b7bd4718ac254;hpb=0ec28c37c21a2b4393692e832e11a7573ac545e2;p=firefly-linux-kernel-4.4.55.git

diff --git a/sound/soc/codecs/rt5645.c b/sound/soc/codecs/rt5645.c
index a7789a8726e3..27141e2df878 100644
--- a/sound/soc/codecs/rt5645.c
+++ b/sound/soc/codecs/rt5645.c
@@ -2209,6 +2209,10 @@ static int rt5645_jack_detect(struct snd_soc_codec *codec)
 	int gpio_state, jack_type = 0;
 	unsigned int val;
 
+	if (!gpio_is_valid(rt5645->pdata.hp_det_gpio)) {
+		dev_err(codec->dev, "invalid gpio\n");
+		return -EINVAL;
+	}
 	gpio_state = gpio_get_value(rt5645->pdata.hp_det_gpio);
 
 	dev_dbg(codec->dev, "gpio = %d(%d)\n", rt5645->pdata.hp_det_gpio,