Am 02.11.2012 12:06, schrieb Jonathan Cameron:
> On 10/24/2012 09:22 AM, Lars-Peter Clausen wrote:
>> On 10/24/2012 09:13 AM, Dan Carpenter wrote:
>>> There is an unlock missing on this error path.
>>>
>>> Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
>>
>> Thanks,
>>
>> Acked-by: Lars-Peter Clausen <lars@xxxxxxxxxx>
> Thanks applied to togreg branch of
> git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git
>
>>
>>> ---
>>> Only needed in linux-next.
>>>
>>> diff --git a/drivers/iio/dac/ad5449.c b/drivers/iio/dac/ad5449.c
>>> index 5b43030..0ee6f8e 100644
>>> --- a/drivers/iio/dac/ad5449.c
>>> +++ b/drivers/iio/dac/ad5449.c
>>> @@ -124,12 +124,13 @@ static int ad5449_read(struct iio_dev *indio_dev, unsigned int addr,
>>>
>>> ret = spi_sync(st->spi, &msg);
>>> if (ret < 0)
>>> - return ret;
>>> + goto out_unlock;
>>>
>>> *val = be16_to_cpu(st->data[1]);
>>> - mutex_unlock(&indio_dev->mlock);
>>>
>>> - return 0;
>>> +out_unlock:
>>> + mutex_unlock(&indio_dev->mlock);
>>> + return ret;
>>> }
>>>
>>> static int ad5449_read_raw(struct iio_dev *indio_dev,
>>> --
if i understand the code correct you can simply the flow
by turning the check on its head.
ret = spi_sync(st->spi, &msg);
if (ret>=0)
*val = be16_to_cpu(st->data[1]);
mutex_unlock(&indio_dev->mlock);
return ret;
re,
wh
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