Shawn Lin 61cadcf46c spi: rockchip: check requesting dma channel with EPROBE_DEFER
Let's defer probing the driver if the return value of
dma_request_slave_channel is ERR_PTR(-EPROBE_DEFER) instead
of disabling dma capability directly.

Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-03-09 16:10:18 +07:00
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