This patch adds a dma_mapping_error call to debug potential DMA mapping errors after the dma_map_single call in rtsx_transport.c. Signed-off-by: Shaun Ren <shaun.ren@xxxxxxxxx> --- drivers/staging/rts5208/rtsx_transport.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/staging/rts5208/rtsx_transport.c b/drivers/staging/rts5208/rtsx_transport.c index c0fd8c5..00da7ab 100644 --- a/drivers/staging/rts5208/rtsx_transport.c +++ b/drivers/staging/rts5208/rtsx_transport.c @@ -664,7 +664,7 @@ 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) -- 2.7.0 _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
