tree c9b40754afc55f95df354cdd896d67cbd3aab9fa
parent 754254daca39b9a75c5c2e6e3d9c5d3c7923abed
author Peter Ujfalusi <peter.ujfalusi@ti.com> 1578470881 +0200
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1590593864 +0200

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

[ Upstream commit 735404b846dffcb320264f62b76e6f70012214dd ]

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>
Signed-off-by: Sasha Levin <sashal@kernel.org>