From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-qk1-f196.google.com ([209.85.222.196]:36156 "EHLO mail-qk1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727878AbeJ0KkO (ORCPT ); Sat, 27 Oct 2018 06:40:14 -0400 Received: by mail-qk1-f196.google.com with SMTP id q184-v6so1847607qkd.3 for ; Fri, 26 Oct 2018 19:00:53 -0700 (PDT) From: Matheus Tavares To: Lars-Peter Clausen , Michael Hennerich , Jonathan Cameron , Hartmut Knaack , Peter Meerwald-Stadler , Greg Kroah-Hartman Cc: linux-iio@vger.kernel.org, devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org, kernel-usp@googlegroups.com Subject: [PATCH v2 6/6] staging:iio:ad2s90: Check channel type at read_raw Date: Fri, 26 Oct 2018 23:00:05 -0300 Message-Id: <20181027020005.3140-7-matheus.bernardino@usp.br> In-Reply-To: <20181027020005.3140-1-matheus.bernardino@usp.br> References: <20181027020005.3140-1-matheus.bernardino@usp.br> Sender: linux-iio-owner@vger.kernel.org List-Id: linux-iio@vger.kernel.org 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 --- 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