spi: spi-s3c64xx: Check return values
Check return values in prepare_dma() and s3c64xx_spi_config() and propagate errors upwards. Fixes: 78843727 ("spi: s3c64xx: move to generic dmaengine API") Reviewed-by:Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by:
Łukasz Stelmach <l.stelmach@samsung.com> Link: https://lore.kernel.org/r/20201002122243.26849-4-l.stelmach@samsung.comSigned-off-by:
Mark Brown <broonie@kernel.org>
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