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 X-Spam-Level: X-Spam-Status: No, score=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 CE2CAC54FD0 for ; Fri, 24 Apr 2020 12:28:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A58DF2087E for ; Fri, 24 Apr 2020 12:28:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1587731288; bh=lxhfnXgYcVRlg5qg2dJlQ3P4jRcUUBgKbYQnuRpQ6iE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=UZ7GWNl2ntLfMGdvh90XfmjZkbpRNuzK4yHkmKw+tabzHVtvWFxmM6d4Nv6TJnCQ8 xrYCkdyGEhDigXtZMt9+D8q/OYjh7r6DBe6awD7FAx/ySLV0VTTiKDz5iVECwW4WTL lAZ1w9iHEY/z0Jpkh/w9uEWVOf+B5rbkH0Vihg2o= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728023AbgDXM2H (ORCPT ); Fri, 24 Apr 2020 08:28:07 -0400 Received: from mail.kernel.org ([198.145.29.99]:54930 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728397AbgDXMYY (ORCPT ); Fri, 24 Apr 2020 08:24:24 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 821C720767; Fri, 24 Apr 2020 12:24:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1587731064; bh=lxhfnXgYcVRlg5qg2dJlQ3P4jRcUUBgKbYQnuRpQ6iE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=RqnFgkRF5BRhHnekQYcawfVe2SqS9IxVV2d2J/F5nM5uN8qszkKyU6CN79XUHvyRf 7CdTQ5vhX441O/8ZqLV3+RVD+kzr79rKcuWpZpePJ4UOGUOXZ1vAVSGoLClZjSHeuc LTLxIjI3cCaOnN2SoOAdwuhNueKa7dW39sXA2j98= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Takashi Iwai , Roy Spliet , Sasha Levin , alsa-devel@alsa-project.org Subject: [PATCH AUTOSEL 4.14 04/21] ALSA: hda: Keep the controller initialization even if no codecs found Date: Fri, 24 Apr 2020 08:24:02 -0400 Message-Id: <20200424122419.10648-4-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200424122419.10648-1-sashal@kernel.org> References: <20200424122419.10648-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Takashi Iwai [ Upstream commit 9479e75fca370a5220784f7596bf598c4dad0b9b ] Currently, when the HD-audio controller driver doesn't detect any codecs, it tries to abort the probe. But this abort happens at the delayed probe, i.e. the primary probe call already returned success, hence the driver is never unbound until user does so explicitly. As a result, it may leave the HD-audio device in the running state without the runtime PM. More badly, if the device is a HD-audio bus that is tied with a GPU, GPU cannot reach to the full power down and consumes unnecessarily much power. This patch changes the logic after no-codec situation; it continues probing without the further codec initialization but keep the controller driver running normally. BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=207043 Tested-by: Roy Spliet Link: https://lore.kernel.org/r/20200413082034.25166-5-tiwai@suse.de Signed-off-by: Takashi Iwai Signed-off-by: Sasha Levin --- sound/pci/hda/hda_intel.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c index a868a88bc2897..9a8f5164d88e5 100644 --- a/sound/pci/hda/hda_intel.c +++ b/sound/pci/hda/hda_intel.c @@ -2012,7 +2012,7 @@ static int azx_first_init(struct azx *chip) /* codec detection */ if (!azx_bus(chip)->codec_mask) { dev_err(card->dev, "no codecs found!\n"); - return -ENODEV; + /* keep running the rest for the runtime PM */ } if (azx_acquire_irq(chip, 0) < 0) @@ -2340,9 +2340,11 @@ static int azx_probe_continue(struct azx *chip) #endif /* create codec instances */ - err = azx_probe_codecs(chip, azx_max_codecs[chip->driver_type]); - if (err < 0) - goto out_free; + if (bus->codec_mask) { + err = azx_probe_codecs(chip, azx_max_codecs[chip->driver_type]); + if (err < 0) + goto out_free; + } #ifdef CONFIG_SND_HDA_PATCH_LOADER if (chip->fw) { @@ -2356,7 +2358,7 @@ static int azx_probe_continue(struct azx *chip) #endif } #endif - if ((probe_only[dev] & 1) == 0) { + if (bus->codec_mask && !(probe_only[dev] & 1)) { err = azx_codec_configure(chip); if (err < 0) goto out_free; -- 2.20.1