From patchwork Thu Jun 12 11:53:05 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hans Verkuil X-Patchwork-Id: 4340721 Return-Path: X-Original-To: patchwork-linux-media@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id AF9F7BEEAA for ; Thu, 12 Jun 2014 11:55:24 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id EBE212034A for ; Thu, 12 Jun 2014 11:55:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1A4B620340 for ; Thu, 12 Jun 2014 11:55:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933339AbaFLLzB (ORCPT ); Thu, 12 Jun 2014 07:55:01 -0400 Received: from smtp-vbr6.xs4all.nl ([194.109.24.26]:3834 "EHLO smtp-vbr6.xs4all.nl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933277AbaFLLyy (ORCPT ); Thu, 12 Jun 2014 07:54:54 -0400 Received: from tschai.lan (209.80-203-20.nextgentel.com [80.203.20.209]) (authenticated bits=0) by smtp-vbr6.xs4all.nl (8.13.8/8.13.8) with ESMTP id s5CBsHaG066441; Thu, 12 Jun 2014 13:54:29 +0200 (CEST) (envelope-from hverkuil@xs4all.nl) Received: from cobaltpc1.cisco.com (173-38-208-169.cisco.com [173.38.208.169]) by tschai.lan (Postfix) with ESMTPSA id A560F2A1FE6; Thu, 12 Jun 2014 13:54:18 +0200 (CEST) From: Hans Verkuil To: linux-media@vger.kernel.org Cc: laurent.pinchart@ideasonboard.com, s.nawrocki@samsung.com, sakari.ailus@iki.fi, Hans Verkuil Subject: [REVIEWv4 PATCH 33/34] solo6x10: check dma_map_sg() return value Date: Thu, 12 Jun 2014 13:53:05 +0200 Message-Id: X-Mailer: git-send-email 2.0.0.rc0 In-Reply-To: <1402573986-20794-1-git-send-email-hverkuil@xs4all.nl> References: <1402573986-20794-1-git-send-email-hverkuil@xs4all.nl> In-Reply-To: <971e25ca71923ba77526326f998227fdfb30f216.1402573818.git.hans.verkuil@cisco.com> References: <971e25ca71923ba77526326f998227fdfb30f216.1402573818.git.hans.verkuil@cisco.com> X-Virus-Scanned: by XS4ALL Virus Scanner Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-Spam-Status: No, score=-7.5 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Hans Verkuil The dma_map_sg() function can fail, so check for the return value. Signed-off-by: Hans Verkuil --- drivers/staging/media/solo6x10/solo6x10-v4l2-enc.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/drivers/staging/media/solo6x10/solo6x10-v4l2-enc.c b/drivers/staging/media/solo6x10/solo6x10-v4l2-enc.c index ab0b1a6..d9d0941 100644 --- a/drivers/staging/media/solo6x10/solo6x10-v4l2-enc.c +++ b/drivers/staging/media/solo6x10/solo6x10-v4l2-enc.c @@ -478,8 +478,9 @@ static int solo_fill_jpeg(struct solo_enc_dev *solo_enc, vb2_set_plane_payload(vb, 0, vop_jpeg_size(vh) + solo_enc->jpeg_len); /* may discard all previous data in vbuf->sgl */ - dma_map_sg(&solo_dev->pdev->dev, vbuf->sgl, vbuf->nents, - DMA_FROM_DEVICE); + if (!dma_map_sg(&solo_dev->pdev->dev, vbuf->sgl, vbuf->nents, + DMA_FROM_DEVICE)) + return -ENOMEM; ret = solo_send_desc(solo_enc, solo_enc->jpeg_len, vbuf, vop_jpeg_offset(vh) - SOLO_JPEG_EXT_ADDR(solo_dev), frame_size, SOLO_JPEG_EXT_ADDR(solo_dev), @@ -525,8 +526,9 @@ static int solo_fill_mpeg(struct solo_enc_dev *solo_enc, frame_size = ALIGN(vop_mpeg_size(vh) + skip, DMA_ALIGN); /* may discard all previous data in vbuf->sgl */ - dma_map_sg(&solo_dev->pdev->dev, vbuf->sgl, vbuf->nents, - DMA_FROM_DEVICE); + if (!dma_map_sg(&solo_dev->pdev->dev, vbuf->sgl, vbuf->nents, + DMA_FROM_DEVICE)) + return -ENOMEM; ret = solo_send_desc(solo_enc, skip, vbuf, frame_off, frame_size, SOLO_MP4E_EXT_ADDR(solo_dev), SOLO_MP4E_EXT_SIZE(solo_dev));