linux-kernel - [PATCH v2] iio: mxs-lradc: remove useless check

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Date:	Sat, 18 Jan 2014 20:05:18 +0100
From:	Alexandre Belloni <alexandre.belloni@...e-electrons.com>
To:	Jonathan Cameron <jic23@...nel.org>
Cc:	Marek Vasut <marex@...x.de>, linux-iio@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Alexandre Belloni <alexandre.belloni@...e-electrons.com>
Subject: [PATCH v2] iio: mxs-lradc: remove useless check

Checking the channel number is useless since mxs_lradc_read_raw() is called from
a controlled environment and the driver is responsible for filing the struct
iio_chan_spec.

Signed-off-by: Alexandre Belloni <alexandre.belloni@...e-electrons.com>
---
 drivers/staging/iio/adc/mxs-lradc.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/drivers/staging/iio/adc/mxs-lradc.c b/drivers/staging/iio/adc/mxs-lradc.c
index 7fc66a6a6e36..d304156ca2f7 100644
--- a/drivers/staging/iio/adc/mxs-lradc.c
+++ b/drivers/staging/iio/adc/mxs-lradc.c
@@ -897,10 +897,6 @@ static int mxs_lradc_read_raw(struct iio_dev *iio_dev,
 {
 	struct mxs_lradc *lradc = iio_priv(iio_dev);
 
-	/* Check for invalid channel */
-	if (chan->channel > LRADC_MAX_TOTAL_CHANS)
-		return -EINVAL;
-
 	switch (m) {
 	case IIO_CHAN_INFO_RAW:
 		if (chan->type == IIO_TEMP)
-- 
1.8.3.2

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