Fabrice Gasnier e6afcf6c59 iio: adc: stm32-adc: fix stopping dma
There maybe a race when using dmaengine_terminate_all(). The predisable
routine may call iio_triggered_buffer_predisable() prior to a pending DMA
callback.
Adopt dmaengine_terminate_sync() to ensure there's no pending DMA request
before calling iio_triggered_buffer_predisable().

Fixes: 2763ea0585c9 ("iio: adc: stm32: add optional dma support")

Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-10-27 15:57:19 +00:00
..
2019-10-27 15:57:19 +00:00
2019-09-19 14:14:28 -07:00
2019-09-19 14:14:28 -07:00