linux-kernel - [PATCH 3.15 19/42] iio:bma180: Missing check for frequency fractional part

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Message-Id: <20140805181321.595412275@linuxfoundation.org>
Date:	Tue,  5 Aug 2014 11:13:33 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Peter Meerwald <pmeerw@...erw.net>,
	Oleksandr Kravchenko <o.v.kravchenko@...ballogic.com>,
	Jonathan Cameron <jic23@...nel.org>
Subject: [PATCH 3.15 19/42] iio:bma180: Missing check for frequency fractional part

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

------------------

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

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: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/iio/accel/bma180.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/iio/accel/bma180.c
+++ b/drivers/iio/accel/bma180.c
@@ -376,6 +376,8 @@ static int bma180_write_raw(struct iio_d
 		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);


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