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iio: inkern: fix a NULL dereference on error

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In twl4030_bci_probe() there are some failure paths where we call
iio_channel_release() with a NULL pointer.  (Apparently, that driver can
opperate without a valid channel pointer).  Let's fix it by adding a
NULL check in iio_channel_release().

Fixes: 2202e1fc5a ('drivers: power: twl4030_charger: fix link problems when building as module')
Signed-off-by: Dan Carpenter <[email protected]>
Cc: <[email protected]>
Signed-off-by: Jonathan Cameron <[email protected]>
This commit is contained in:
Dan Carpenter 2016-01-26 12:25:21 +03:00 • committed by Jonathan Cameron
commit d81dac3c1c
1 changed files with 2 additions and 0 deletions
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drivers/iio/inkern.c
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@ -351,6 +351,8 @@ EXPORT_SYMBOL_GPL(iio_channel_get);
void iio_channel_release(struct iio_channel *channel)
{
if (!channel)
return;
iio_device_put(channel->indio_dev);
kfree(channel);
}