iio: adc: ad7793: Add missing error code in ad7793_setup()

YueHaibing · jic23 · commit 4ed243b1da16 · 2021-05-22T08:32:36.000+01:00
Set error code while device ID query failed. Fixes: 88bc305 ("IIO: ADC: New driver for AD7792/AD7793 3 Channel SPI ADC") Signed-off-by: YueHaibing <yuehaibing@huawei.com> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
diff --git a/drivers/iio/adc/ad7793.c b/drivers/iio/adc/ad7793.c
@@ -279,6 +279,7 @@ static int ad7793_setup(struct iio_dev *indio_dev,
 	id &= AD7793_ID_MASK;
 
 	if (id != st->chip_info->id) {
+		ret = -ENODEV;
 		dev_err(&st->sd.spi->dev, "device ID query failed\n");
 		goto out;
 	}

Original file line number	Diff line number	Diff line change
`@@ -279,6 +279,7 @@ static int ad7793_setup(struct iio_dev *indio_dev,`
`279`	`279`	`id &= AD7793_ID_MASK;`
`280`	`280`
`281`	`281`	`if (id != st->chip_info->id) {`
	`282`	`+ ret = -ENODEV;`
`282`	`283`	`dev_err(&st->sd.spi->dev, "device ID query failed\n");`
`283`	`284`	`goto out;`
`284`	`285`	`}`