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From: Alexandru Ardelean <alexandru.ardelean@analog.com>
To: <linux-iio@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Cc: <lars@metafoo.de>, <Michael.Hennerich@analog.com>,
	<jic23@kernel.org>, <dragos.bogdan@analog.com>,
	Alexandru Ardelean <alexandru.ardelean@analog.com>
Subject: [PATCH 10/10] iio: imu: adis: assign value only if return code zero in read funcs
Date: Fri, 1 Nov 2019 11:35:05 +0200	[thread overview]
Message-ID: <20191101093505.9408-11-alexandru.ardelean@analog.com> (raw)
In-Reply-To: <20191101093505.9408-1-alexandru.ardelean@analog.com>

The inline read functions in the ADIS library don't check the return value
of the `adis_read_reg()` function and assign the value of `tmp` regardless.

Fix this by checking if return value is zero and only then assigning the
value of `tmp`.

Fixes: 57a1228a06b7a ("iio:imu:adis: Add support for 32bit registers")
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
---
 include/linux/iio/imu/adis.h | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/include/linux/iio/imu/adis.h b/include/linux/iio/imu/adis.h
index 4c53815bb729..92aae14593bf 100644
--- a/include/linux/iio/imu/adis.h
+++ b/include/linux/iio/imu/adis.h
@@ -129,7 +129,8 @@ static inline int adis_read_reg_16(struct adis *adis, unsigned int reg,
 	int ret;
 
 	ret = adis_read_reg(adis, reg, &tmp, 2);
-	*val = tmp;
+	if (ret == 0)
+		*val = tmp;
 
 	return ret;
 }
@@ -147,7 +148,8 @@ static inline int adis_read_reg_32(struct adis *adis, unsigned int reg,
 	int ret;
 
 	ret = adis_read_reg(adis, reg, &tmp, 4);
-	*val = tmp;
+	if (ret == 0)
+		*val = tmp;
 
 	return ret;
 }
-- 
2.20.1


  parent reply	other threads:[~2019-11-01  9:35 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-01  9:34 [PATCH 00/10] iio: adis: cleanups and fixes Alexandru Ardelean
2019-11-01  9:34 ` [PATCH 01/10] iio: gyro: adis16136: check ret val for non-zero vs less-than-zero Alexandru Ardelean
2019-11-03 10:15   ` Jonathan Cameron
2019-11-01  9:34 ` [PATCH 02/10] iio: imu: adis16400: " Alexandru Ardelean
2019-11-03 10:21   ` Jonathan Cameron
2019-11-04  7:40     ` Ardelean, Alexandru
2019-11-01  9:34 ` [PATCH 03/10] iio: imu: adis16460: " Alexandru Ardelean
2019-11-03 10:25   ` Jonathan Cameron
2019-11-01  9:34 ` [PATCH 04/10] iio: imu: adis16480: " Alexandru Ardelean
2019-11-03 10:27   ` Jonathan Cameron
2019-11-01  9:35 ` [PATCH 05/10] iio: imu: adis: " Alexandru Ardelean
2019-11-03 10:31   ` Jonathan Cameron
2019-11-01  9:35 ` [PATCH 06/10] iio: imu: adis16480: fix indentation of return statement Alexandru Ardelean
2019-11-03 10:35   ` Jonathan Cameron
2019-11-01  9:35 ` [PATCH 07/10] iio: imu: adis16480: prefer `unsigned int` over `unsigned` Alexandru Ardelean
2019-11-03 10:36   ` Jonathan Cameron
2019-11-01  9:35 ` [PATCH 08/10] iio: imu: adis16480: assign bias value only if operation succeeded Alexandru Ardelean
2019-11-03 10:41   ` Jonathan Cameron
2019-11-04  8:50     ` Ardelean, Alexandru
2019-11-01  9:35 ` [PATCH 09/10] iio: imu: adis: assign read val in debugfs hook only if op successful Alexandru Ardelean
2019-11-03 10:46   ` Jonathan Cameron
2019-11-01  9:35 ` Alexandru Ardelean [this message]
2019-11-03 10:49   ` [PATCH 10/10] iio: imu: adis: assign value only if return code zero in read funcs Jonathan Cameron

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