From patchwork Mon Mar 1 16:12:48 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 389158 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-18.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9748CC43331 for ; Mon, 1 Mar 2021 20:24:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 56BC660235 for ; Mon, 1 Mar 2021 20:24:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243151AbhCAUXO (ORCPT ); Mon, 1 Mar 2021 15:23:14 -0500 Received: from mail.kernel.org ([198.145.29.99]:43664 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242792AbhCAUQK (ORCPT ); Mon, 1 Mar 2021 15:16:10 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 30FC76506B; Mon, 1 Mar 2021 18:02:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1614621750; bh=13/SFlDXf22dps/MVLYCYrY6oU1978dBydjZlNBbMfA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Wz0Y8GGedfhcxpj4ps195F9IlWQKdKDbEDHLueeWA1gyc/NK3XQSthBQ/v95qu8nm N8JAsveECdFM0sLwfE3tNHeCA8yWSbbrlId/6uSZTGuPaQB4IN5Y47FrDRH39zJ9a6 5ecMNyB8/kb+AWaJPBxVU7zIDYYqlnVKATcq/5Dc= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Kai Vehmanen , Takashi Iwai Subject: [PATCH 5.11 600/775] ALSA: hda/hdmi: Drop bogus check at closing a stream Date: Mon, 1 Mar 2021 17:12:48 +0100 Message-Id: <20210301161231.069419072@linuxfoundation.org> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210301161201.679371205@linuxfoundation.org> References: <20210301161201.679371205@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Takashi Iwai commit 056a3da5d07fc5d3ceacfa2cdf013c9d8df630bd upstream. Some users reported the kernel WARNING with stack traces from hdmi_pcm_close(), and it's the line checking the per_cvt->assigned flag. This used to be a valid check in the past because the flag was turned on/off only at opening and closing a PCM stream. Meanwhile, since the introduction of the silent-stream mode, this flag may be turned on/off at the monitor connection/disconnection time, which isn't always associated with the PCM open/close. Hence this may lead to the inconsistent per_cvt->assigned flag at closing. As the check itself became almost useless and confuses users as if it were a serious problem, just drop the check. Fixes: b1a5039759cb ("ALSA: hda/hdmi: fix silent stream for first playback to DP") Cc: BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=210987 Reviewed-by: Kai Vehmanen Link: https://lore.kernel.org/r/20210211083139.29531-1-tiwai@suse.de Signed-off-by: Takashi Iwai Signed-off-by: Greg Kroah-Hartman --- sound/pci/hda/patch_hdmi.c | 1 - 1 file changed, 1 deletion(-) --- a/sound/pci/hda/patch_hdmi.c +++ b/sound/pci/hda/patch_hdmi.c @@ -2130,7 +2130,6 @@ static int hdmi_pcm_close(struct hda_pcm goto unlock; } per_cvt = get_cvt(spec, cvt_idx); - snd_BUG_ON(!per_cvt->assigned); per_cvt->assigned = 0; hinfo->nid = 0;