staging: iio: resolver: ad2s1210: do not use fault register for dummy read

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When reading registers on the AD2S1210 chip, we have to supply a "dummy"
address for the second SPI tx byte so that we don't accidentally write
to a register. This register will be read and the value discarded on the
next regmap read or write call.

Reading the fault register has a side-effect of clearing the faults
so we should not use this register for the dummy read.

Signed-off-by: David Lechner <dlechner@baylibre.com>
Link: https://lore.kernel.org/r/20231005-ad2s1210-mainline-v4-1-ec00746840fc@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

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David Lechner 2023-10-05 19:50:18 -05:00 • committed by Jonathan Cameron

parent 6eb14ffa18

commit d97d11c70f

1 changed files with 3 additions and 2 deletions

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drivers/staging/iio/resolver/ad2s1210.c

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