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Commit 3cd5f508 authored by Lucas Stankus's avatar Lucas Stankus Committed by Greg Kroah-Hartman
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staging: iio: cdc: ad7746: avoid overwrite of num_channels 



commit 04f5b9f539ce314f758d919a14dc7a669f3b7838 upstream.

AD7745 devices don't have the CIN2 pins and therefore can't handle related
channels. Forcing the number of AD7746 channels may lead to enabling more
channels than what the hardware actually supports.
Avoid num_channels being overwritten after first assignment.

Signed-off-by: default avatarLucas Stankus <lucas.p.stankus@gmail.com>
Fixes: 83e416f4 ("staging: iio: adc: Replace, rewrite ad7745 from scratch.")
Signed-off-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 8fff0b53

drivers/staging/iio/cdc/ad7746.c

+0 −1
Original line number Diff line number Diff line
@@ -714,7 +714,6 @@ static int ad7746_probe(struct i2c_client *client, 
		indio_dev->num_channels = ARRAY_SIZE(ad7746_channels);

	else

		indio_dev->num_channels =  ARRAY_SIZE(ad7746_channels) - 2;

	indio_dev->num_channels = ARRAY_SIZE(ad7746_channels);

	indio_dev->modes = INDIO_DIRECT_MODE;



	if (pdata) {