iio: adc: mcp3422: fix locking scope

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Locking should be held for the entire reading sequence involving setting
the channel, waiting for the channel switch and reading from the
channel.
If not, reading from a channel can result mixing with the reading from
another channel.

Fixes: 07914c84ba ("iio: adc: Add driver for Microchip MCP3422/3/4 high resolution ADC")
Signed-off-by: Angelo Compagnucci <angelo.compagnucci@gmail.com>
Link: https://lore.kernel.org/r/20200819075525.1395248-1-angelo.compagnucci@gmail.com
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

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Angelo Compagnucci 2020-08-19 09:55:25 +02:00 • committed by Jonathan Cameron

parent d53bfdf2f0

commit 3f1093d83d

1 changed files with 7 additions and 5 deletions

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drivers/iio/adc/mcp3422.c

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