spi: s3c64xx: fix compiler warning in spi-s3c64xx

The Exynos 7 arm64 support now allows the S3C64xx SPI driver to be
compiled into an ARM64 kernel, so the cast from the [rt]x_dmach int
variable to a void* in this driver now triggers a warning.
Add a long cast to silence the compiler.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c
index 9231c34..b1c6731 100644 (file)
--- a/drivers/spi/spi-s3c64xx.c
+++ b/drivers/spi/spi-s3c64xx.c
@@ -324,7 +324,7 @@ static int s3c64xx_spi_prepare_transfer(struct spi_master *spi)
 
                /* Acquire DMA channels */
                sdd->rx_dma.ch = dma_request_slave_channel_compat(mask, filter,
-                                  (void *)sdd->rx_dma.dmach, dev, "rx");
+                                  (void *)(long)sdd->rx_dma.dmach, dev, "rx");
                if (!sdd->rx_dma.ch) {
                        dev_err(dev, "Failed to get RX DMA channel\n");
                        ret = -EBUSY;
@@ -333,7 +333,7 @@ static int s3c64xx_spi_prepare_transfer(struct spi_master *spi)
                spi->dma_rx = sdd->rx_dma.ch;
 
                sdd->tx_dma.ch = dma_request_slave_channel_compat(mask, filter,
-                                  (void *)sdd->tx_dma.dmach, dev, "tx");
+                                  (void *)(long)sdd->tx_dma.dmach, dev, "tx");
                if (!sdd->tx_dma.ch) {
                        dev_err(dev, "Failed to get TX DMA channel\n");
                        ret = -EBUSY;