Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752810AbdHITx1 (ORCPT ); Wed, 9 Aug 2017 15:53:27 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:45208 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752337AbdHITm5 (ORCPT ); Wed, 9 Aug 2017 15:42:57 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Gopikrishnaiah Anandan , Banajit Goswami , Patrick Lai , Mark Brown Subject: [PATCH 4.4 05/58] ASoC: do not close shared backend dailink Date: Wed, 9 Aug 2017 12:41:17 -0700 Message-Id: <20170809194146.722670063@linuxfoundation.org> X-Mailer: git-send-email 2.14.0 In-Reply-To: <20170809194146.501519882@linuxfoundation.org> References: <20170809194146.501519882@linuxfoundation.org> User-Agent: quilt/0.65 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1244 Lines: 39 4.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: Banajit Goswami commit b1cd2e34c69a2f3988786af451b6e17967c293a0 upstream. Multiple frontend dailinks may be connected to a backend dailink at the same time. When one of frontend dailinks is closed, the associated backend dailink should not be closed if it is connected to other active frontend dailinks. Change ensures that backend dailink is closed only after all connected frontend dailinks are closed. Signed-off-by: Gopikrishnaiah Anandan Signed-off-by: Banajit Goswami Signed-off-by: Patrick Lai Signed-off-by: Mark Brown Signed-off-by: Greg Kroah-Hartman --- sound/soc/soc-pcm.c | 4 ++++ 1 file changed, 4 insertions(+) --- a/sound/soc/soc-pcm.c +++ b/sound/soc/soc-pcm.c @@ -181,6 +181,10 @@ int dpcm_dapm_stream_event(struct snd_so dev_dbg(be->dev, "ASoC: BE %s event %d dir %d\n", be->dai_link->name, event, dir); + if ((event == SND_SOC_DAPM_STREAM_STOP) && + (be->dpcm[dir].users >= 1)) + continue; + snd_soc_dapm_stream_event(be, dir, event); }