lkml.org 
[lkml]   [2018]   [Oct]   [26]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 6/6] staging:iio:ad2s90: Check channel type at read_raw
Date
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(+)

diff --git a/drivers/staging/iio/resolver/ad2s90.c b/drivers/staging/iio/resolver/ad2s90.c
index 52b656875ed1..24002042a5c5 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 - 1) ~= 0.001534355 */
--
2.18.0
\
 
 \ /
  Last update: 2018-10-26 02:46    [W:0.102 / U:0.276 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site