spi: s3c64xx: set pointers to null using NULL rather than 0

There are pointers being set to null using use. Use NULL instead.

Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
Link: https://lore.kernel.org/r/20220612203428.2754823-1-colin.i.king@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c
index 0ce5810..819b660 100644 (file)
--- a/drivers/spi/spi-s3c64xx.c
+++ b/drivers/spi/spi-s3c64xx.c
@@ -354,7 +354,7 @@ static int s3c64xx_spi_prepare_transfer(struct spi_master *spi)
        sdd->rx_dma.ch = dma_request_chan(&sdd->pdev->dev, "rx");
        if (IS_ERR(sdd->rx_dma.ch)) {
                dev_err(&sdd->pdev->dev, "Failed to get RX DMA channel\n");
-               sdd->rx_dma.ch = 0;
+               sdd->rx_dma.ch = NULL;
                return 0;
        }
 
@@ -362,8 +362,8 @@ static int s3c64xx_spi_prepare_transfer(struct spi_master *spi)
        if (IS_ERR(sdd->tx_dma.ch)) {
                dev_err(&sdd->pdev->dev, "Failed to get TX DMA channel\n");
                dma_release_channel(sdd->rx_dma.ch);
-               sdd->tx_dma.ch = 0;
-               sdd->rx_dma.ch = 0;
+               sdd->tx_dma.ch = NULL;
+               sdd->rx_dma.ch = NULL;
                return 0;
        }
 
@@ -808,8 +808,8 @@ static int s3c64xx_spi_transfer_one(struct spi_master *master,
        if (sdd->rx_dma.ch && sdd->tx_dma.ch) {
                dma_release_channel(sdd->rx_dma.ch);
                dma_release_channel(sdd->tx_dma.ch);
-               sdd->rx_dma.ch = 0;
-               sdd->tx_dma.ch = 0;
+               sdd->rx_dma.ch = NULL;
+               sdd->tx_dma.ch = NULL;
        }
 
        return status;