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,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 6F1E7C76186 for ; Wed, 24 Jul 2019 20:30:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3BDD8204EC for ; Wed, 24 Jul 2019 20:30:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1564000253; bh=IwmdfIkC2MqFSmTk8Jj9ODAe/YIn4lBeiRKZeC1gaSk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=akKU+gZ8W20iAknHqng1lalu78k2ujwWNvpX9PIKcC+qQqi7j/9So8jsRjHvO6zQI 4dCdj12HOVlGT4w7FrQjPhXPaZ2StLCXv9pJ7oXIuFWjRJoD9DG6Z4h9ZnRtR9Yr24 PrqJysqagR4T0s2LFDJsQNOGAICGZWUpmEpwQJjI= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389730AbfGXUaw (ORCPT ); Wed, 24 Jul 2019 16:30:52 -0400 Received: from mail.kernel.org ([198.145.29.99]:52406 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388479AbfGXTb1 (ORCPT ); Wed, 24 Jul 2019 15:31:27 -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 40C9221951; Wed, 24 Jul 2019 19:31:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1563996686; bh=IwmdfIkC2MqFSmTk8Jj9ODAe/YIn4lBeiRKZeC1gaSk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=bj6MDSt+DP6fD3Op5WbKktvuWvDQRKUaXaatIShNZ4yQPgzSFeqth6EmbvefhOo/7 TrCXG2AEX8eL8ini3txrnff4stg/lsh97xvrlyVN5YpSHjJZo4I4JWJ44L85kJgtD5 SE+U9j2LRwmrwYjoE/Y0Pu1uDq8cr2YhTjMhjGac= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, =?UTF-8?q?Amadeusz=20S=C5=82awi=C5=84ski?= , Pierre-Louis Bossart , Mark Brown , Sasha Levin Subject: [PATCH 5.2 165/413] ASoC: Intel: hdac_hdmi: Set ops to NULL on remove Date: Wed, 24 Jul 2019 21:17:36 +0200 Message-Id: <20190724191746.841668644@linuxfoundation.org> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20190724191735.096702571@linuxfoundation.org> References: <20190724191735.096702571@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 [ Upstream commit 0f6ff78540bd1b4df1e0f17806b0ce2e1dff0d78 ] When we unload Skylake driver we may end up calling hdac_component_master_unbind(), it uses acomp->audio_ops, which we set in hdmi_codec_probe(), so we need to set it to NULL in hdmi_codec_remove(), otherwise we will dereference no longer existing pointer. Signed-off-by: Amadeusz Sławiński Reviewed-by: Pierre-Louis Bossart Signed-off-by: Mark Brown Signed-off-by: Sasha Levin --- sound/soc/codecs/hdac_hdmi.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/sound/soc/codecs/hdac_hdmi.c b/sound/soc/codecs/hdac_hdmi.c index 1f57126708e7..c9f9820968bb 100644 --- a/sound/soc/codecs/hdac_hdmi.c +++ b/sound/soc/codecs/hdac_hdmi.c @@ -1859,6 +1859,12 @@ static void hdmi_codec_remove(struct snd_soc_component *component) { struct hdac_hdmi_priv *hdmi = snd_soc_component_get_drvdata(component); struct hdac_device *hdev = hdmi->hdev; + int ret; + + ret = snd_hdac_acomp_register_notifier(hdev->bus, NULL); + if (ret < 0) + dev_err(&hdev->dev, "notifier unregister failed: err: %d\n", + ret); pm_runtime_disable(&hdev->dev); } -- 2.20.1