[PATCH 6/6] iio: pressure: hid-sensor-press: Fix memory leak in probe()

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



From: Fabio Estevam <fabio.estevam@xxxxxxxxxxxxx>

'channels' is allocated via kmemdup and it is never freed.

Use 'indio_dev->channels' directly instead, so that we avoid such
memory leak problem.

Signed-off-by: Fabio Estevam <fabio.estevam@xxxxxxxxxxxxx>
---
Build-tested only.

 drivers/iio/pressure/hid-sensor-press.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/iio/pressure/hid-sensor-press.c b/drivers/iio/pressure/hid-sensor-press.c
index 7bb8d4c..f1bcb89 100644
--- a/drivers/iio/pressure/hid-sensor-press.c
+++ b/drivers/iio/pressure/hid-sensor-press.c
@@ -262,7 +262,6 @@ static int hid_press_probe(struct platform_device *pdev)
 	struct iio_dev *indio_dev;
 	struct press_state *press_state;
 	struct hid_sensor_hub_device *hsdev = pdev->dev.platform_data;
-	struct iio_chan_spec *channels;
 
 	indio_dev = devm_iio_device_alloc(&pdev->dev,
 				sizeof(struct press_state));
@@ -282,20 +281,21 @@ static int hid_press_probe(struct platform_device *pdev)
 		return ret;
 	}
 
-	channels = kmemdup(press_channels, sizeof(press_channels), GFP_KERNEL);
-	if (!channels) {
+	indio_dev->channels = kmemdup(press_channels, sizeof(press_channels),
+				      GFP_KERNEL);
+	if (!indio_dev->channels) {
 		dev_err(&pdev->dev, "failed to duplicate channels\n");
 		return -ENOMEM;
 	}
 
-	ret = press_parse_report(pdev, hsdev, channels,
+	ret = press_parse_report(pdev, hsdev,
+				(struct iio_chan_spec *)indio_dev->channels,
 				HID_USAGE_SENSOR_PRESSURE, press_state);
 	if (ret) {
 		dev_err(&pdev->dev, "failed to setup attributes\n");
 		goto error_free_dev_mem;
 	}
 
-	indio_dev->channels = channels;
 	indio_dev->num_channels =
 				ARRAY_SIZE(press_channels);
 	indio_dev->dev.parent = &pdev->dev;
-- 
1.9.1

--
To unsubscribe from this list: send the line "unsubscribe linux-iio" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html




[Index of Archives]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Input]     [Linux Kernel]     [Linux SCSI]     [X.org]

  Powered by Linux