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iio: pressure: hid-sensor-press: Fix memory leak in probe() 

'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@freescale.com>
Reviewed-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Fabio Estevam 2015-05-13 15:06:14 -03:00 committed by Jonathan Cameron
parent 2bd0462843
commit c24e7daf82
1 changed files with 6 additions and 6 deletions
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12
drivers/iio/pressure/hid-sensor-press.c
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@ -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,
HID_USAGE_SENSOR_PRESSURE, press_state);
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;