linux-kernel - [PATCH 1/4] iio: adc: ad7124: Remove input number limitation

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Message-ID: <20190620091908.12041-1-mircea.caprioru@analog.com>
Date:   Thu, 20 Jun 2019 12:19:05 +0300
From:   Mircea Caprioru <mircea.caprioru@...log.com>
To:     <jic23@...nel.org>
CC:     <Michael.Hennerich@...log.com>, <stefan.popa@...log.com>,
        <lars@...afoo.de>, <gregkh@...uxfoundation.org>,
        <linux-kernel@...r.kernel.org>, <linux-iio@...r.kernel.org>,
        Mircea Caprioru <mircea.caprioru@...log.com>
Subject: [PATCH 1/4] iio: adc: ad7124: Remove input number limitation

The driver limits the user to use only 4/8 differential inputs, but this
device has the option to use pseudo-differential channels. This will
increase the number of channels to be equal with the number of inputs so 8
channels for ad7124-4 and 16 for ad7124-8.

This patch removes the check between channel nodes and num_inputs value.

Signed-off-by: Mircea Caprioru <mircea.caprioru@...log.com>
---
 drivers/iio/adc/ad7124.c | 7 -------
 1 file changed, 7 deletions(-)

diff --git a/drivers/iio/adc/ad7124.c b/drivers/iio/adc/ad7124.c
index 659ef37d5fe8..810234db9c0d 100644
--- a/drivers/iio/adc/ad7124.c
+++ b/drivers/iio/adc/ad7124.c
@@ -462,13 +462,6 @@ static int ad7124_of_parse_channel_config(struct iio_dev *indio_dev,
 		if (ret)
 			goto err;
 
-		if (ain[0] >= st->chip_info->num_inputs ||
-		    ain[1] >= st->chip_info->num_inputs) {
-			dev_err(indio_dev->dev.parent,
-				"Input pin number out of range.\n");
-			ret = -EINVAL;
-			goto err;
-		}
 		st->channel_config[channel].ain = AD7124_CHANNEL_AINP(ain[0]) |
 						  AD7124_CHANNEL_AINM(ain[1]);
 		st->channel_config[channel].bipolar =
-- 
2.17.1