[PATCH 6/6] atmel_spi: fix warning In function 'atmel_spi_dma_map_xfer'

[Jean-Christophe PLAGNIOL-VILLARD]

passing argument 2 of 'dma_map_single' discards qualifiers from pointer target type

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj at jcrosoft.com>
---
 drivers/spi/atmel_spi.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/drivers/spi/atmel_spi.c b/drivers/spi/atmel_spi.c
index 154529a..2cf6abd 100644
--- a/drivers/spi/atmel_spi.c
+++ b/drivers/spi/atmel_spi.c
@@ -352,8 +352,10 @@ atmel_spi_dma_map_xfer(struct atmel_spi *as, struct spi_transfer *xfer)
 
 	xfer->tx_dma = xfer->rx_dma = INVALID_DMA_ADDRESS;
 	if (xfer->tx_buf) {
+		void *nonconst_tx = (void *)xfer->tx_buf; /* shut up gcc */
+
 		xfer->tx_dma = dma_map_single(dev,
-				(void *) xfer->tx_buf, xfer->len,
+				nonconst_tx, xfer->len,
 				DMA_TO_DEVICE);
 		if (dma_mapping_error(dev, xfer->tx_dma))
 			return -ENOMEM;
-- 
1.7.1