'channels' is allocated via kmemdup and it is never freed in the
subsequent error paths.
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.
Changes since v1:
- Make clear in the commit log that the proble only occurs in the error
paths
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
--
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