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由 Vignesh Raghavendra 提交于
dma_request_channel() can return -EPROBE_DEFER, if DMA driver is not ready. Currently driver just falls back to PIO mode on probe deferral. Fix this by requesting all required channels during probe and propagating EPROBE_DEFER error code. Signed-off-by: NVignesh Raghavendra <vigneshr@ti.com> Link: https://lore.kernel.org/r/20200204124816.16735-3-vigneshr@ti.comSigned-off-by: NMark Brown <broonie@kernel.org>
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