[PATCH 4/4] spi: bcm2835: set SPI_MASTER_MUST_RX_SG/TX_SG flags

[kernel@xxxxxxxxxxxxxxxx]

From: Martin Sperl <kernel@xxxxxxxxxxxxxxxx>

Signed-off-by: Martin Sperl <kernel@xxxxxxxxxxxxxxxx>
---
 drivers/spi/spi-bcm2835.c |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/spi/spi-bcm2835.c b/drivers/spi/spi-bcm2835.c
index bfcc436..e98db57 100644
--- a/drivers/spi/spi-bcm2835.c
+++ b/drivers/spi/spi-bcm2835.c
@@ -462,6 +462,8 @@ static void bcm2835_dma_init(struct spi_master *master, struct device *dev)
 	/* all went well, so set can_dma */
 	master->can_dma = bcm2835_spi_can_dma;
 	master->max_dma_len = 65535; /* limitation by BCM2835_SPI_DLEN */
+	/* need to do TX AND RX DMA, so we need scatter-gather lists */
+	master->flags = SPI_MASTER_MUST_RX_SG | SPI_MASTER_MUST_TX_SG;
 
 	return;
 
-- 
1.7.10.4

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