| Message ID | 20181103224948.31014-7-matheus.bernardino@usp.br (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | staging:iio:ad2s90: Add scale info and improve error handling | expand |
On Sat, 3 Nov 2018 19:49:48 -0300 Matheus Tavares <matheus.bernardino@usp.br> wrote: > This patch adds a channel type check at the beginning of the > ad2s90_read_raw function. Since ad2s90 has only one channel, it just > checks if the given channel is the expected one and if not, return > -EINVAL. > > Signed-off-by: Matheus Tavares <matheus.bernardino@usp.br> Given you can't actually get here with another channel type by any valid means, this is more a form of code as documentation than anything else. Still it does no harm and arguably does make it easier to read. Applied to the togreg branch of iio.git and pushed out as testing for the autobuilders to play with it. A nice little clean up series. Thanks! Jonathan > --- > drivers/staging/iio/resolver/ad2s90.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/drivers/staging/iio/resolver/ad2s90.c b/drivers/staging/iio/resolver/ad2s90.c > index 9c168b7410d0..3e257ac46f7a 100644 > --- a/drivers/staging/iio/resolver/ad2s90.c > +++ b/drivers/staging/iio/resolver/ad2s90.c > @@ -34,6 +34,9 @@ static int ad2s90_read_raw(struct iio_dev *indio_dev, > int ret; > struct ad2s90_state *st = iio_priv(indio_dev); > > + if (chan->type != IIO_ANGL) > + return -EINVAL; > + > switch (m) { > case IIO_CHAN_INFO_SCALE: > /* 2 * Pi / 2^12 */
diff --git a/drivers/staging/iio/resolver/ad2s90.c b/drivers/staging/iio/resolver/ad2s90.c index 9c168b7410d0..3e257ac46f7a 100644 --- a/drivers/staging/iio/resolver/ad2s90.c +++ b/drivers/staging/iio/resolver/ad2s90.c @@ -34,6 +34,9 @@ static int ad2s90_read_raw(struct iio_dev *indio_dev, int ret; struct ad2s90_state *st = iio_priv(indio_dev); + if (chan->type != IIO_ANGL) + return -EINVAL; + switch (m) { case IIO_CHAN_INFO_SCALE: /* 2 * Pi / 2^12 */
This patch adds a channel type check at the beginning of the ad2s90_read_raw function. Since ad2s90 has only one channel, it just checks if the given channel is the expected one and if not, return -EINVAL. Signed-off-by: Matheus Tavares <matheus.bernardino@usp.br> --- drivers/staging/iio/resolver/ad2s90.c | 3 +++ 1 file changed, 3 insertions(+)