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atmel_spi: fix warning In function 'atmel_spi_dma_map_xfer'

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

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
This commit is contained in:
Jean-Christophe PLAGNIOL-VILLARD 2010-11-20 14:52:53 +08:00 committed by Nicolas Ferre
parent 82d5b5c8da
commit 214b574ab8
1 changed files with 5 additions and 1 deletions
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6
drivers/spi/atmel_spi.c
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@ -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; xfer->tx_dma = xfer->rx_dma = INVALID_DMA_ADDRESS;
if (xfer->tx_buf) { 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, xfer->tx_dma = dma_map_single(dev,
(void *) xfer->tx_buf, xfer->len, nonconst_tx, xfer->len,
DMA_TO_DEVICE); DMA_TO_DEVICE);
if (dma_mapping_error(dev, xfer->tx_dma)) if (dma_mapping_error(dev, xfer->tx_dma))
return -ENOMEM; return -ENOMEM;