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: v4.4.271~44
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=29b72cbb1b23b78b685f65664459b23f1ad1d044;p=thirdparty%2Fkernel%2Fstable.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 fe0c5a155e211..2e89937b56294 100644
--- 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;
 	}