From: YueHaibing <yuehaibing@huawei.com>
Date: Fri, 14 May 2021 08:02:54 +0000 (+0800)
Subject: iio: adc: ad7793: Add missing error code in ad7793_setup()
X-Git-Tag: v5.4.124~129
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=72fa5c26936a9b69ba4ce576e048e2a35d465da9;p=users%2Fdwmw2%2Flinux.git

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

commit 4ed243b1da169bcbc1ec5507867e56250c5f1ff9 upstream.

Set error code while device ID query failed.

Fixes: 88bc30548aae ("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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/iio/adc/ad7793.c b/drivers/iio/adc/ad7793.c
index 6ed6d14102016..947d6c7772344 100644
--- a/drivers/iio/adc/ad7793.c
+++ b/drivers/iio/adc/ad7793.c
@@ -278,6 +278,7 @@ 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;
 	}