linux-kernel - [PATCH 3.12 013/104] iio:bma180: Missing check for frequency fractional part

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Date:	Wed, 20 Aug 2014 13:42:36 +0200
From:	Jiri Slaby <jslaby@...e.cz>
To:	stable@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, Peter Meerwald <pmeerw@...erw.net>,
	Oleksandr Kravchenko <o.v.kravchenko@...ballogic.com>,
	Jonathan Cameron <jic23@...nel.org>,
	Jiri Slaby <jslaby@...e.cz>
Subject: [PATCH 3.12 013/104] iio:bma180: Missing check for frequency fractional part

From: Peter Meerwald <pmeerw@...erw.net>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 9b2a4d35a6ceaf217be61ed8eb3c16986244f640 upstream.

val2 should be zero

This will make no difference for correct inputs but will reject
incorrect ones with a decimal part in the value written to the sysfs
interface.

Signed-off-by: Peter Meerwald <pmeerw@...erw.net>
Cc: Oleksandr Kravchenko <o.v.kravchenko@...ballogic.com>
Signed-off-by: Jonathan Cameron <jic23@...nel.org>
Signed-off-by: Jiri Slaby <jslaby@...e.cz>
---
 drivers/iio/accel/bma180.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/iio/accel/bma180.c b/drivers/iio/accel/bma180.c
index 225aea63eaf5..60a3bab42263 100644
--- a/drivers/iio/accel/bma180.c
+++ b/drivers/iio/accel/bma180.c
@@ -376,6 +376,8 @@ static int bma180_write_raw(struct iio_dev *indio_dev,
 		mutex_unlock(&data->mutex);
 		return ret;
 	case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY:
+		if (val2)
+			return -EINVAL;
 		mutex_lock(&data->mutex);
 		ret = bma180_set_bw(data, val);
 		mutex_unlock(&data->mutex);
-- 
2.0.4

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