spi: spi-davinci: Fix direction in dma_map_single()
Commit 048177ce (spi: spi-davinci: convert to DMA engine API) introduced a regression: dma_map_single() is called with direction DMA_FROM_DEVICE for rx and for tx. Signed-off-by: Christian Eggers <ceggers@gmx.de> Acked-by: Matt Porter <mporter@ti.com> Signed-off-by: Mark Brown <broonie@linaro.org> Cc: stable@vger.kernel.org # v3.7.x+
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