iio: adc: stm32: fix stm32h7_adc_enable error handling

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commit a3b5655ebd upstream.

Error handling in stm32h7_adc_enable routine doesn't unwind enable
sequence correctly. ADEN can only be cleared by hardware (e.g. by
writing one to ADDIS).
It's also better to clear ADRDY just after it's been set by hardware.

Fixes: 95e339b6e8 ("iio: adc: stm32: add support for STM32H7")

Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Fabrice Gasnier 2018-01-23 17:04:56 +01:00 • committed by Greg Kroah-Hartman

parent 2492eca0a0

commit f4f94e9bae

1 changed files with 4 additions and 3 deletions

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drivers/iio/adc/stm32-adc.c

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