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=-14.1 required=3.0 tests=BAYES_00,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 CCE95C433E1 for ; Mon, 24 Aug 2020 16:57:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8CDB5206F0 for ; Mon, 24 Aug 2020 16:57:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1598288261; bh=z7HQxv9VSgRcd7nBu9ujYpFT8TnEHBX4hITSL08r+ps=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=ItThyM4u9YccC0hf6YP2KOXLUwsQv17jtHe80lxKDcYDLzQ45a1WzpEFPJuVKGXzh mcv6Gjf9fpBK8UwjChf6FA0c9qL0v8ig9bYfL84BUXLgW5WkhmTEN5I6m9n834a7to JWxwiFYW1gGJoEa5n/ZMDRA2A8w5blWN/pHgO2MI= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726617AbgHXQ5Z (ORCPT ); Mon, 24 Aug 2020 12:57:25 -0400 Received: from mail.kernel.org ([198.145.29.99]:46412 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728536AbgHXQjA (ORCPT ); Mon, 24 Aug 2020 12:39:00 -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 AD82D22DA7; Mon, 24 Aug 2020 16:38:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1598287140; bh=z7HQxv9VSgRcd7nBu9ujYpFT8TnEHBX4hITSL08r+ps=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=HjFHXrSnCSnLjtu77Wqh8xf3DzlWrWY4KIfKQfQSnIWMaqT+uGJktBdQ8v9BDMJzu hE9MzrHEMB6d2TUGH/ZwvNQEZQvtEpqRIMRxl6Ya8PaEIC5+3Lq3lcntc3KaZi/w60 hRUQY3On1xa2q80cz31IJ8DUP/kCv+CGqMlWA6pI= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Sylwester Nawrocki , Charles Keepax , Mark Brown , Sasha Levin , patches@opensource.cirrus.com, alsa-devel@alsa-project.org Subject: [PATCH AUTOSEL 4.19 11/21] ASoC: wm8994: Avoid attempts to read unreadable registers Date: Mon, 24 Aug 2020 12:38:35 -0400 Message-Id: <20200824163845.606933-11-sashal@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200824163845.606933-1-sashal@kernel.org> References: <20200824163845.606933-1-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: Sylwester Nawrocki [ Upstream commit f082bb59b72039a2326ec1a44496899fb8aa6d0e ] The driver supports WM1811, WM8994, WM8958 devices but according to documentation and the regmap definitions the WM8958_DSP2_* registers are only available on WM8958. In current code these registers are being accessed as if they were available on all the three chips. When starting playback on WM1811 CODEC multiple errors like: "wm8994-codec wm8994-codec: ASoC: error at soc_component_read_no_lock on wm8994-codec: -5" can be seen, which is caused by attempts to read an unavailable WM8958_DSP2_PROGRAM register. The issue has been uncovered by recent commit "e2329ee ASoC: soc-component: add soc_component_err()". This patch adds a check in wm8958_aif_ev() callback so the DSP2 handling is only done for WM8958. Signed-off-by: Sylwester Nawrocki Acked-by: Charles Keepax Link: https://lore.kernel.org/r/20200731173834.23832-1-s.nawrocki@samsung.com Signed-off-by: Mark Brown Signed-off-by: Sasha Levin --- sound/soc/codecs/wm8958-dsp2.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/sound/soc/codecs/wm8958-dsp2.c b/sound/soc/codecs/wm8958-dsp2.c index 108e8bf42a346..f0a409504a13b 100644 --- a/sound/soc/codecs/wm8958-dsp2.c +++ b/sound/soc/codecs/wm8958-dsp2.c @@ -419,8 +419,12 @@ int wm8958_aif_ev(struct snd_soc_dapm_widget *w, struct snd_kcontrol *kcontrol, int event) { struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm); + struct wm8994 *control = dev_get_drvdata(component->dev->parent); int i; + if (control->type != WM8958) + return 0; + switch (event) { case SND_SOC_DAPM_POST_PMU: case SND_SOC_DAPM_PRE_PMU: -- 2.25.1