[PATCH v2 9/9] Staging: rts5208: Add missing dma_mapping_error

[Shaun Ren]

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