From mboxrd@z Thu Jan 1 00:00:00 1970 From: shaun.ren@linux.com (Shaun Ren) Date: Tue, 9 Feb 2016 18:45:28 -0800 Subject: [PATCH v3 9/9] Staging: rts5208: Add missing dma_mapping_error In-Reply-To: <1455072328-7033-1-git-send-email-shaun.ren@linux.com> References: <1454981485-15686-1-git-send-email-shaun.ren@linux.com> <1455072328-7033-1-git-send-email-shaun.ren@linux.com> Message-ID: <1455072328-7033-10-git-send-email-shaun.ren@linux.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 --- 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 46fc8c2..2b38de7 100644 --- a/drivers/staging/rts5208/rtsx_transport.c +++ b/drivers/staging/rts5208/rtsx_transport.c @@ -658,7 +658,7 @@ 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