From patchwork Sun Aug 30 19:07:58 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Robert Jarzmik X-Patchwork-Id: 7098001 Return-Path: X-Original-To: patchwork-linux-media@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 561849F1CD for ; Sun, 30 Aug 2015 19:13:56 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 824F020785 for ; Sun, 30 Aug 2015 19:13:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id F3FA8207CB for ; Sun, 30 Aug 2015 19:13:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753808AbbH3TMq (ORCPT ); Sun, 30 Aug 2015 15:12:46 -0400 Received: from smtp08.smtpout.orange.fr ([80.12.242.130]:35856 "EHLO smtp.smtpout.orange.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753791AbbH3TMo (ORCPT ); Sun, 30 Aug 2015 15:12:44 -0400 Received: from belgarion.home ([109.222.68.49]) by mwinf5d68 with ME id B7Ce1r00713mqGD037CiwG; Sun, 30 Aug 2015 21:12:43 +0200 X-ME-Helo: belgarion.home X-ME-Date: Sun, 30 Aug 2015 21:12:43 +0200 X-ME-IP: 109.222.68.49 From: Robert Jarzmik To: Guennadi Liakhovetski , Mauro Carvalho Chehab , Jiri Kosina Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, Robert Jarzmik , Robert Jarzmik Subject: [PATCH v4 1/4] media: pxa_camera: fix the buffer free path Date: Sun, 30 Aug 2015 21:07:58 +0200 Message-Id: <1440961681-17279-2-git-send-email-robert.jarzmik@free.fr> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1440961681-17279-1-git-send-email-robert.jarzmik@free.fr> References: <1440961681-17279-1-git-send-email-robert.jarzmik@free.fr> Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00,FREEMAIL_FROM, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable 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: Robert Jarzmik Fix the error path where the video buffer wasn't allocated nor mapped. In this case, in the driver free path don't try to unmap memory which was not mapped in the first place. Signed-off-by: Robert Jarzmik --- drivers/media/platform/soc_camera/pxa_camera.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/media/platform/soc_camera/pxa_camera.c b/drivers/media/platform/soc_camera/pxa_camera.c index fcb942de0c7f..aa304950bb98 100644 --- a/drivers/media/platform/soc_camera/pxa_camera.c +++ b/drivers/media/platform/soc_camera/pxa_camera.c @@ -272,8 +272,8 @@ static void free_buffer(struct videobuf_queue *vq, struct pxa_buffer *buf) * longer in STATE_QUEUED or STATE_ACTIVE */ videobuf_waiton(vq, &buf->vb, 0, 0); - videobuf_dma_unmap(vq->dev, dma); - videobuf_dma_free(dma); + if (buf->vb.state == VIDEOBUF_NEEDS_INIT) + return; for (i = 0; i < ARRAY_SIZE(buf->dmas); i++) { if (buf->dmas[i].sg_cpu) @@ -283,6 +283,8 @@ static void free_buffer(struct videobuf_queue *vq, struct pxa_buffer *buf) buf->dmas[i].sg_dma); buf->dmas[i].sg_cpu = NULL; } + videobuf_dma_unmap(vq->dev, dma); + videobuf_dma_free(dma); buf->vb.state = VIDEOBUF_NEEDS_INIT; }