Staging: rts5208: fix check for dma mapping error

use dma_mapping_error() instead of comparing the returned address with
zero after dma_map_single().

Signed-off-by: Haneen Mohammed <hamohammed.sa@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/rts5208/rtsx_transport.c b/drivers/staging/rts5208/rtsx_transport.c
index f27491e..0c9549b 100644 (file)
--- a/drivers/staging/rts5208/rtsx_transport.c
+++ b/drivers/staging/rts5208/rtsx_transport.c
@@ -653,7 +653,7 @@ static int rtsx_transfer_buf(struct rtsx_chip *chip, u8 card, void *buf,
                return -ENXIO;
 
        addr = dma_map_single(&(rtsx->pci->dev), buf, len, dma_dir);
-       if (!addr)
+       if (dma_mapping_error(&rtsx->pci->dev, addr))
                return -ENOMEM;
 
        if (card == SD_CARD)