From 214b574ab81236e7740243985d63a1d6a61231a2 Mon Sep 17 00:00:00 2001 From: Jean-Christophe PLAGNIOL-VILLARD Date: Sat, 20 Nov 2010 14:52:53 +0800 Subject: [PATCH] atmel_spi: fix warning In function 'atmel_spi_dma_map_xfer' passing argument 2 of 'dma_map_single' discards qualifiers from pointer target type Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD Signed-off-by: Nicolas Ferre --- drivers/spi/atmel_spi.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/spi/atmel_spi.c b/drivers/spi/atmel_spi.c index 154529aacc03..a067046c9da2 100644 --- a/drivers/spi/atmel_spi.c +++ b/drivers/spi/atmel_spi.c @@ -352,8 +352,12 @@ 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) { + /* tx_buf is a const void* where we need a void * for the dma + * mapping */ + void *nonconst_tx = (void *)xfer->tx_buf; + 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; -- 2.39.2