On 05/31/2016 02:47 PM, Luis de Bethencourt wrote:
> val is set to the value of ret right after ret is checked. If ret is not
> zero it goes to error_ret. So only value ret can have is zero, which makes
> the switch (val & 0x03) only match the case 0x00. Removing the switch and
> since val is only used for this, removing val as well.
>
> Signed-off-by: Luis de Bethencourt <luisbg@xxxxxxxxxxxxxxx>
> ---
> drivers/staging/iio/accel/sca3000_core.c | 16 ++--------------
> 1 file changed, 2 insertions(+), 14 deletions(-)
>
> diff --git a/drivers/staging/iio/accel/sca3000_core.c b/drivers/staging/iio/accel/sca3000_core.c
> index a8f533a..94656f6 100644
> --- a/drivers/staging/iio/accel/sca3000_core.c
> +++ b/drivers/staging/iio/accel/sca3000_core.c
> @@ -586,7 +586,7 @@ static ssize_t sca3000_read_frequency(struct device *dev,
> {
> struct iio_dev *indio_dev = dev_to_iio_dev(dev);
> struct sca3000_state *st = iio_priv(indio_dev);
> - int ret, len = 0, base_freq = 0, val;
> + int ret, len = 0, base_freq = 0;
>
> mutex_lock(&st->lock);
> ret = __sca3000_get_base_freq(st, st->info, &base_freq);
> @@ -596,20 +596,8 @@ static ssize_t sca3000_read_frequency(struct device *dev,
> mutex_unlock(&st->lock);
> if (ret)
I'm not sure, but I'm guessing this switch serves some purpose and this
was meant to be (ret < 0).
> goto error_ret;
> - val = ret;
> if (base_freq > 0)
> - switch (val & 0x03) {
> - case 0x00:
> - case 0x03:
> - len = sprintf(buf, "%d\n", base_freq);
> - break;
> - case 0x01:
> - len = sprintf(buf, "%d\n", base_freq / 2);
> - break;
> - case 0x02:
> - len = sprintf(buf, "%d\n", base_freq / 4);
> - break;
> - }
> + len = sprintf(buf, "%d\n", base_freq);
>
> return len;
> error_ret_mut:
>
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