[PATCH 2/3] spi: spi-xilinx: Clear dma_mask for xilinx spi controller

[Michal Simek]

From: Michal Simek <monstr@xxxxxxxxx>

mmc_spi driver tests if dma is available
through spi->master->dev.parent->dma_mask.
Microblaze supports DMA but xilinx_spi IP doesn't.
That's why clear dma_mask in the driver.

Signed-off-by: Michal Simek <michal.simek@xxxxxxxxxx>
---
 drivers/spi/spi-xilinx.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/spi/spi-xilinx.c b/drivers/spi/spi-xilinx.c
index 34d18dc..d690756 100644
--- a/drivers/spi/spi-xilinx.c
+++ b/drivers/spi/spi-xilinx.c
@@ -365,6 +365,9 @@ struct spi_master *xilinx_spi_init(struct device *dev, struct resource *mem,
 	if (!master)
 		return NULL;

+	/* clear the dma_mask, to try to disable use of dma */
+	master->dev.dma_mask = 0;
+
 	/* the spi->mode bits understood by this driver: */
 	master->mode_bits = SPI_CPOL | SPI_CPHA;

--
1.8.2.3

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