Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753272AbbGESbj (ORCPT ); Sun, 5 Jul 2015 14:31:39 -0400 Received: from smtp02.smtpout.orange.fr ([80.12.242.124]:40319 "EHLO smtp.smtpout.orange.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752212AbbGESaj (ORCPT ); Sun, 5 Jul 2015 14:30:39 -0400 X-ME-Helo: belgarion.home X-ME-Date: Sun, 05 Jul 2015 20:30:38 +0200 X-ME-IP: 86.199.196.87 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 v2 1/4] media: pxa_camera: fix the buffer free path Date: Sun, 5 Jul 2015 20:27:49 +0200 Message-Id: <1436120872-24484-2-git-send-email-robert.jarzmik@free.fr> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1436120872-24484-1-git-send-email-robert.jarzmik@free.fr> References: <1436120872-24484-1-git-send-email-robert.jarzmik@free.fr> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1540 Lines: 43 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 8d6e343..3ca33f0 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; } -- 2.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/