iio: adc: stm32-adc: Use dma_request_chan() instead dma_request_slave_channel()

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dma_request_slave_channel() is a wrapper on top of dma_request_chan()
eating up the error code.

By using dma_request_chan() directly the driver can support deferred
probing against DMA.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Acked-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

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Peter Ujfalusi 2020-01-08 10:08:01 +02:00 • committed by Jonathan Cameron

parent a9ab624edd

commit 735404b846

1 changed files with 14 additions and 2 deletions

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drivers/iio/adc/stm32-adc.c

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