The pmic_reg_read() function can return errors. Add a check for that.
Fixes: 4e8aa0065d4b ("button: qcom-pmic: introduce Qualcomm PMIC button driver") Signed-off-by: Dan Carpenter dan.carpenter@linaro.org --- This patch is mostly to make static checkers happy but it's obvious and harmless.
drivers/button/button-qcom-pmic.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/button/button-qcom-pmic.c b/drivers/button/button-qcom-pmic.c index 34a976d1e6c6..e778e51a4f36 100644 --- a/drivers/button/button-qcom-pmic.c +++ b/drivers/button/button-qcom-pmic.c @@ -86,7 +86,7 @@ static int qcom_pwrkey_probe(struct udevice *dev) }
ret = pmic_reg_read(priv->pmic, priv->base + REG_SUBTYPE); - if ((ret & 0x7) == 0) { + if (ret < 0 || (ret & 0x7) == 0) { printf("%s: unexpected PMCI function subtype %d\n", dev->name, ret); return -ENXIO; }