On Sun, Mar 19, 2017 at 11:26 PM, Julia Lawall <julia.lawall@xxxxxxx> wrote:
>
>
> On Sun, 19 Mar 2017, simran singhal wrote:
>
>> Remove unnecessary goto.
>>
>> Signed-off-by: simran singhal <singhalsimran0@xxxxxxxxx>
>> ---
>> drivers/staging/iio/impedance-analyzer/ad5933.c | 10 ++++------
>> 1 file changed, 4 insertions(+), 6 deletions(-)
>>
>> diff --git a/drivers/staging/iio/impedance-analyzer/ad5933.c b/drivers/staging/iio/impedance-analyzer/ad5933.c
>> index 297665d..c9ed2ac 100644
>> --- a/drivers/staging/iio/impedance-analyzer/ad5933.c
>> +++ b/drivers/staging/iio/impedance-analyzer/ad5933.c
>> @@ -663,12 +663,12 @@ static void ad5933_work(struct work_struct *work)
>> ad5933_cmd(st, AD5933_CTRL_START_SWEEP);
>> st->state = AD5933_CTRL_START_SWEEP;
>> schedule_delayed_work(&st->work, st->poll_time_jiffies);
>> - goto out;
>> + mutex_unlock(&indio_dev->mlock);
>
> This is not correct. The code at the end of the function implicitly does
> a return, which has disappeared in the change. You could add a return to
> each place wher you have put a mutex_unlock, but I think that the code was
> better off as it was. It's microscopically less error prone to have this
> cleanup code in only one place.
>
OOPS!! This is totally wrong.
Sorry for this.
> julia
>
>> }
>>
>> ret = ad5933_i2c_read(st->client, AD5933_REG_STATUS, 1, &status);
>> if (ret)
>> - goto out;
>> + mutex_unlock(&indio_dev->mlock);
>>
>> if (status & AD5933_STAT_DATA_VALID) {
>> int scan_count = bitmap_weight(indio_dev->active_scan_mask,
>> @@ -678,7 +678,7 @@ static void ad5933_work(struct work_struct *work)
>> AD5933_REG_REAL_DATA : AD5933_REG_IMAG_DATA,
>> scan_count * 2, (u8 *)buf);
>> if (ret)
>> - goto out;
>> + mutex_unlock(&indio_dev->mlock);
>>
>> if (scan_count == 2) {
>> val[0] = be16_to_cpu(buf[0]);
>> @@ -690,7 +690,7 @@ static void ad5933_work(struct work_struct *work)
>> } else {
>> /* no data available - try again later */
>> schedule_delayed_work(&st->work, st->poll_time_jiffies);
>> - goto out;
>> + mutex_unlock(&indio_dev->mlock);
>> }
>>
>> if (status & AD5933_STAT_SWEEP_DONE) {
>> @@ -703,8 +703,6 @@ static void ad5933_work(struct work_struct *work)
>> ad5933_cmd(st, AD5933_CTRL_INC_FREQ);
>> schedule_delayed_work(&st->work, st->poll_time_jiffies);
>> }
>> -out:
>> - mutex_unlock(&indio_dev->mlock);
>> }
>>
>> static int ad5933_probe(struct i2c_client *client,
>> --
>> 2.7.4
>>
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