From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757038AbcBJCr3 (ORCPT ); Tue, 9 Feb 2016 21:47:29 -0500 Received: from mail-ig0-f175.google.com ([209.85.213.175]:36273 "EHLO mail-ig0-f175.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757327AbcBJCp5 (ORCPT ); Tue, 9 Feb 2016 21:45:57 -0500 From: Shaun Ren To: gregkh@linuxfoundation.org, rjui@broadcom.com Cc: sbranden@broadcom.com, jonmason@broadcom.com, mahfouz.saif.elyazal@gmail.com, joe@perches.com, devel@driverdev.osuosl.org, linux-arm-kernel@lists.infradead.org, bcm-kernel-feedback-list@broadcom.com, linux-kernel@vger.kernel.org, Shaun Ren Subject: [PATCH v3 9/9] Staging: rts5208: Add missing dma_mapping_error Date: Tue, 9 Feb 2016 18:45:28 -0800 Message-Id: <1455072328-7033-10-git-send-email-shaun.ren@linux.com> X-Mailer: git-send-email 2.7.0 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> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.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