tree eb5461770b63a0a75dd38485bfae0401400d4f47
parent 90af01f6d9faa30367cbd0d09fbbbaa0ac0eea8e
author Peter Ujfalusi <peter.ujfalusi@ti.com> 1578397532 +0200
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1590593865 +0200

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

[ Upstream commit a9ab624edd9186fbad734cfe5d606a6da3ca34db ]

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: Olivier Moysan <olivier.moysan@st.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>