tree 159729be53052426dee06c841d852dad1293113a
parent bc0195aad0daa2ad5b0d76cce22b167bc3435590
author Sascha Hauer <s.hauer@pengutronix.de> 1437742868 +0200
committer Mark Brown <broonie@kernel.org> 1437750535 +0100

spi: imx: Fix small DMA transfers

DMA transfers must be greater than the watermark level size. spi_imx->rx_wml
and spi_imx->tx_wml contain the watermark level in 32bit words whereas struct
spi_transfer contains the transfer len in bytes. Fix the check if DMA is
possible for a transfer accordingly. This fixes transfers with sizes between
33 and 128 bytes for which previously was claimed that DMA is possible.

Fixes: f62caccd12c17e4 (spi: spi-imx: add DMA support)
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Cc: stable@vger.kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>