From patchwork Mon Mar 3 09:48:44 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mauro Carvalho Chehab X-Patchwork-Id: 3752491 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 3E908BF40C for ; Mon, 3 Mar 2014 09:49:33 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 74E602024D for ; Mon, 3 Mar 2014 09:49:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 848C120304 for ; Mon, 3 Mar 2014 09:49:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753940AbaCCJt1 (ORCPT ); Mon, 3 Mar 2014 04:49:27 -0500 Received: from bombadil.infradead.org ([198.137.202.9]:49214 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753886AbaCCJtZ (ORCPT ); Mon, 3 Mar 2014 04:49:25 -0500 Received: from [201.74.152.26] (helo=smtp.w2.samsung.com) by bombadil.infradead.org with esmtpsa (Exim 4.80.1 #2 (Red Hat Linux)) id 1WKPUx-0002fj-1V; Mon, 03 Mar 2014 09:49:23 +0000 Received: from mchehab by smtp.w2.samsung.com with local (Exim 4.80.1) (envelope-from ) id 1WKPUP-0005km-58; Mon, 03 Mar 2014 06:48:49 -0300 From: Mauro Carvalho Chehab Cc: Mauro Carvalho Chehab , Linux Media Mailing List , Mauro Carvalho Chehab Subject: [PATCH 1/4] [media] em28xx_dvb: only call the software filter if data Date: Mon, 3 Mar 2014 06:48:44 -0300 Message-Id: <1393840127-22081-1-git-send-email-m.chehab@samsung.com> X-Mailer: git-send-email 1.8.5.3 To: unlisted-recipients:; (no To-header on input) 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, 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 Several URBs will be simply not filled. Don't call the DVB core software filter for those empty URBs. Signed-off-by: Mauro Carvalho Chehab --- drivers/media/usb/em28xx/em28xx-dvb.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/media/usb/em28xx/em28xx-dvb.c b/drivers/media/usb/em28xx/em28xx-dvb.c index c1091c454354..301463f463c6 100644 --- a/drivers/media/usb/em28xx/em28xx-dvb.c +++ b/drivers/media/usb/em28xx/em28xx-dvb.c @@ -161,6 +161,8 @@ static inline int em28xx_dvb_urb_data_copy(struct em28xx *dev, struct urb *urb) if (urb->status != -EPROTO) continue; } + if (!urb->actual_length) + continue; dvb_dmx_swfilter(&dev->dvb->demux, urb->transfer_buffer, urb->actual_length); } else { @@ -170,6 +172,8 @@ static inline int em28xx_dvb_urb_data_copy(struct em28xx *dev, struct urb *urb) if (urb->iso_frame_desc[i].status != -EPROTO) continue; } + if (!urb->iso_frame_desc[i].actual_length) + continue; dvb_dmx_swfilter(&dev->dvb->demux, urb->transfer_buffer + urb->iso_frame_desc[i].offset,