linux-kernel - [PATCH v1 1/1] iio: pressure: dlhl60d: Don't take garbage into consideration when reading data

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Message-Id: <20220726142048.4494-1-andriy.shevchenko@linux.intel.com>
Date:   Tue, 26 Jul 2022 17:20:48 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Tomislav Denis <tomislav.denis@....com>,
        Jonathan Cameron <jic23@...nel.org>,
        Lars-Peter Clausen <lars@...afoo.de>
Subject: [PATCH v1 1/1] iio: pressure: dlhl60d: Don't take garbage into consideration when reading data

Both pressure and temperature are 24-bit long. Use proper accessors
instead of overlapping readings.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 drivers/iio/pressure/dlhl60d.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/iio/pressure/dlhl60d.c b/drivers/iio/pressure/dlhl60d.c
index 5f6bb3603a8b..f0b0d198c6d4 100644
--- a/drivers/iio/pressure/dlhl60d.c
+++ b/drivers/iio/pressure/dlhl60d.c
@@ -129,9 +129,8 @@ static int dlh_read_direct(struct dlh_state *st,
 	if (ret)
 		return ret;
 
-	*pressure = get_unaligned_be32(&st->rx_buf[1]) >> 8;
-	*temperature = get_unaligned_be32(&st->rx_buf[3]) &
-		GENMASK(DLH_NUM_TEMP_BITS - 1, 0);
+	*pressure = get_unaligned_be24(&st->rx_buf[1]);
+	*temperature = get_unaligned_be24(&st->rx_buf[4]);
 
 	return 0;
 }
-- 
2.35.1