From: Haneen Mohammed <hamohammed.sa@gmail.com>
Date: Tue, 9 Feb 2016 20:03:05 +0000 (+0300)
Subject: Staging: rts5208: fix check for dma mapping error
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=9a66d05d82db0404cf39669052a1cb0da608873c;p=openwrt%2Fstaging%2Fblogic.git

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 f27491e802ed..0c9549bae986 100644
--- 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)