From: Martin Sperl <[email protected]>
Signed-off-by: Martin Sperl <[email protected]>
---
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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