[PATCH 4.4 112/113] hwmon: (iio_hwmon) fix memory leak in name attribute

Greg Kroah-Hartman
2016-09-05T16:58:24Z

From: Quentin Schulz <quentin.schulz@free-electrons.com>

commit 5d17d3b4bbf3becb89fd48b74340a50a39736f6d upstream.

The "name" variable's memory is now freed when the device is destructed
thanks to devm function.

Signed-off-by: Quentin Schulz <quentin.schulz@free-electrons.com>
Reported-by: Guenter Roeck <linux@roeck-us.net>
Fixes: e0f8a24e0edfd ("staging:iio::hwmon interface client driver.")
Fixes: 61bb53bcbdd86 ("hwmon: (iio_hwmon) Add support for humidity sensors")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/hwmon/iio_hwmon.c | 24 ++++++++++++------------
1 file changed, 12 insertions(+), 12 deletions(-)

--- a/drivers/hwmon/iio_hwmon.c
+++ b/drivers/hwmon/iio_hwmon.c
@@ -109,24 +109,24 @@ static int iio_hwmon_probe(struct platfo

switch (type) {
case IIO_VOLTAGE:
- a->dev_attr.attr.name = kasprintf(GFP_KERNEL,
- "in%d_input",
- in_i++);
+ a->dev_attr.attr.name = devm_kasprintf(dev, GFP_KERNEL,
+ "in%d_input",
+ in_i++);
break;
case IIO_TEMP:
- a->dev_attr.attr.name = kasprintf(GFP_KERNEL,
- "temp%d_input",
- temp_i++);
+ a->dev_attr.attr.name = devm_kasprintf(dev, GFP_KERNEL,
+ "temp%d_input",
+ temp_i++);
break;
case IIO_CURRENT:
- a->dev_attr.attr.name = kasprintf(GFP_KERNEL,
- "curr%d_input",
- curr_i++);
+ a->dev_attr.attr.name = devm_kasprintf(dev, GFP_KERNEL,
+ "curr%d_input",
+ curr_i++);
break;
case IIO_HUMIDITYRELATIVE:
- a->dev_attr.attr.name = kasprintf(GFP_KERNEL,
- "humidity%d_input",
- humidity_i++);
+ a->dev_attr.attr.name = devm_kasprintf(dev, GFP_KERNEL,
+ "humidity%d_input",
+ humidity_i++);
break;
default:
ret = -EINVAL;