From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 13F90C7EE43 for ; Wed, 7 Jun 2023 21:00:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235772AbjFGVAm (ORCPT ); Wed, 7 Jun 2023 17:00:42 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33350 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235941AbjFGVAG (ORCPT ); Wed, 7 Jun 2023 17:00:06 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CF58F2130 for ; Wed, 7 Jun 2023 13:59:38 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 24A50648D2 for ; Wed, 7 Jun 2023 20:59:16 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3A1D9C433EF; Wed, 7 Jun 2023 20:59:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1686171555; bh=/aQHJrkPZV+ML/j/omdPFfLwhiWitT9bbB2gtn71rlc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=zEBBdwsjYBmfXH7ZOfKrU5yxMS/RQmKyHZ6UDSEIXxqb+6zC5dx3cY7NYo+wotCYL kEqiMtn0Xd+JLGXEmc0eUKYXCBvjKen0agDwGYT79FpZLhnZ/aXPDJeJlxBnajC4yq oZgLVRaI3nts0FnMvjOunFSA/LBSEwRsrpMYsoNM= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, YongSu Yoo , Mauro Carvalho Chehab , Sasha Levin Subject: [PATCH 5.15 063/159] media: dvb_demux: fix a bug for the continuity counter Date: Wed, 7 Jun 2023 22:16:06 +0200 Message-ID: <20230607200905.749825281@linuxfoundation.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230607200903.652580797@linuxfoundation.org> References: <20230607200903.652580797@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: YongSu Yoo [ Upstream commit 7efb10d8dc70ea3000cc70dca53407c52488acd1 ] In dvb_demux.c, some logics exist which compare the expected continuity counter and the real continuity counter. If they are not matched each other, both of the expected continuity counter and the real continuity counter should be printed. But there exists a bug that the expected continuity counter is not correctly printed. The expected continuity counter is replaced with the real countinuity counter + 1 so that the epected continuity counter is not correclty printed. This is wrong. This bug is fixed. Link: https://lore.kernel.org/linux-media/20230305212519.499-1-yongsuyoo0215@gmail.com Signed-off-by: YongSu Yoo Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Sasha Levin --- drivers/media/dvb-core/dvb_demux.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/media/dvb-core/dvb_demux.c b/drivers/media/dvb-core/dvb_demux.c index 5fde1d38b3e34..80b495982f63c 100644 --- a/drivers/media/dvb-core/dvb_demux.c +++ b/drivers/media/dvb-core/dvb_demux.c @@ -125,12 +125,12 @@ static inline int dvb_dmx_swfilter_payload(struct dvb_demux_feed *feed, cc = buf[3] & 0x0f; ccok = ((feed->cc + 1) & 0x0f) == cc; - feed->cc = cc; if (!ccok) { set_buf_flags(feed, DMX_BUFFER_FLAG_DISCONTINUITY_DETECTED); dprintk_sect_loss("missed packet: %d instead of %d!\n", cc, (feed->cc + 1) & 0x0f); } + feed->cc = cc; if (buf[1] & 0x40) // PUSI ? feed->peslen = 0xfffa; @@ -310,7 +310,6 @@ static int dvb_dmx_swfilter_section_packet(struct dvb_demux_feed *feed, cc = buf[3] & 0x0f; ccok = ((feed->cc + 1) & 0x0f) == cc; - feed->cc = cc; if (buf[3] & 0x20) { /* adaption field present, check for discontinuity_indicator */ @@ -346,6 +345,7 @@ static int dvb_dmx_swfilter_section_packet(struct dvb_demux_feed *feed, feed->pusi_seen = false; dvb_dmx_swfilter_section_new(feed); } + feed->cc = cc; if (buf[1] & 0x40) { /* PUSI=1 (is set), section boundary is here */ -- 2.39.2