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=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 D78E6C4724C for ; Fri, 1 May 2020 13:37:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B6EC324954 for ; Fri, 1 May 2020 13:37:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1588340243; bh=GZCl39VIH5zDp0nkCodPTNaCNT1yMG52x4YMPziwtFk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=dsFg76HjG/AeTK51msSPXTE8IOccn1JkLOBU8VZaETxUAcT2lxaOXjh0MepumJu1c DwjBNdmfMzGsftNVXGFNOdyKrQVq6swsBTgG/TIFXRSj8G6ngmYTJI7ZFSOatxmPuT LXxcN0MZRhkRI2XWE9TTSuCvsFBTSlnbtmbd3CDA= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730685AbgEANhW (ORCPT ); Fri, 1 May 2020 09:37:22 -0400 Received: from mail.kernel.org ([198.145.29.99]:36082 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729200AbgEANhN (ORCPT ); Fri, 1 May 2020 09:37:13 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id ED8192173E; Fri, 1 May 2020 13:37:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1588340232; bh=GZCl39VIH5zDp0nkCodPTNaCNT1yMG52x4YMPziwtFk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=fzZ5RzRnNahSawy7uphFwacxRbxRfO0hVrOk0szcTajZk9vpa8/gx73FXd7hNfHo6 2PmTRYKebLhrfSzZzpH5qImTY3Uqbea996s8BAWgjlz8qf16/na8sOwsqdRmhTWXZ0 6Y7HQNjwNXF1DECqo47VjgjHGR9xASD+x8B9Sy0w= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Roy Spliet , Takashi Iwai , Sasha Levin Subject: [PATCH 4.19 31/46] ALSA: hda: Keep the controller initialization even if no codecs found Date: Fri, 1 May 2020 15:22:56 +0200 Message-Id: <20200501131509.715298157@linuxfoundation.org> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200501131457.023036302@linuxfoundation.org> References: <20200501131457.023036302@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 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 0502042c16163..72c268e887e55 100644 --- a/sound/pci/hda/hda_intel.c +++ b/sound/pci/hda/hda_intel.c @@ -2054,7 +2054,7 @@ 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) @@ -2440,9 +2440,11 @@ 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) { @@ -2456,7 +2458,7 @@ 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