From: Matheus Tavares Date: Sat, 3 Nov 2018 22:49:48 +0000 (-0300) Subject: staging:iio:ad2s90: Check channel type at read_raw X-Git-Tag: v5.4-rc1~1925^2~249^2~38 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=addacf3b49ffc0ad0e8ec96697394fd2c2d0fcdb;p=platform%2Fkernel%2Flinux-rpi.git staging:iio:ad2s90: Check channel type at read_raw 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 Signed-off-by: Jonathan Cameron --- 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 */