From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1BE1D4BCAAA for ; Wed, 22 Jul 2026 11:01:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784718086; cv=none; b=KNAVchuElMySS8pcWGwBDXpmzMwSBujY8I0gcf6aCuIM3VLko8mnDYv0yt3WyGehGavczFOA3M7Qg8QUTAhvjwDx1WxYLEVDpfoaREgdTothD9JfzPuSiOOqsdEkiTWUM9cCqeLmu6uSgZFC1z6pM7eLWN00/lh4BR47sQABcMM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784718086; c=relaxed/simple; bh=cmq6VmbtjVAGDjVj2SlOAghqo7Co3qZifsljxwWs5DU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=BQVllZBrl9DOsxR3j3PeWnqHn8/+Iz8IblYagAxHaEXAjazaY2AkyeMstrI4HYa+gRcA4XH07GBqeJmQXi6EY5hj+Q+kunDSnHCaIf/ZZtNRBhp2C7oEk0+IBN2GRpTZfBvJlVzifgtq9+0ltoScz5dIjepULWums9xgU/187zw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ZenUtQQP; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="ZenUtQQP" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 47EAE1F000E9; Wed, 22 Jul 2026 11:01:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1784718084; bh=whsWH9JJjU9x17YJP/XQnEQj1U9fbpgiTlnUZEfD5NE=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=ZenUtQQP/ZWWjkKtX6Q5cQLqw+k3B6bcADqLbSfYsLjtdsaKPzF7i6iWMi0l7eZ+z fjlTIr4ko8FlU9tGeifbgWaneiB/i68XZ3ZsRFQsKx9sLUmA6gA3DqWf/KxBisFjgY d3su1O+cSGsUGoU0JbcMVDBSH0Py3ujnzQjb8K/W79QXf0+O/6qPkkKqsg1AXJxqGv Nlwe7crm42B5gf29D4RJAFH5ZX53e85EZomAeTqPw8gXX5iTBdsQgQsyzwOn/pP2Yi ZWMZ/UZE8EdnNl478kUXgdfR13S5TN6ZvpaYdimLCvD9XDk5ZbeIpp0PepHyvWsxLH VjZ6Av4O3iGoQ== From: Sasha Levin To: stable@vger.kernel.org Cc: Xu Rao , Takashi Iwai , Sasha Levin Subject: [PATCH 6.12.y] ALSA: hda: Fix cached processing coefficient verbs Date: Wed, 22 Jul 2026 07:01:22 -0400 Message-ID: <20260722110122.1006393-1-sashal@kernel.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <2026072010-denial-election-d397@gregkh> References: <2026072010-denial-election-d397@gregkh> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Xu Rao [ Upstream commit f67be28fdf8b5d31ac1cc1152bb17250f9f8f513 ] Intel HD Audio defines Coefficient Index and Processing Coefficient as separate audio widget controls in the Audio Widget Verb Definitions: Coefficient Index selects the coefficient slot, while Processing Coefficient accesses the value at the selected slot. hda_reg_read_coef() selects the slot with AC_VERB_SET_COEF_INDEX, but then uses AC_VERB_GET_COEF_INDEX for the value read. That reads back the selected index instead of the coefficient value. hda_reg_write_coef() has the same issue and builds the value write from AC_VERB_GET_COEF_INDEX instead of AC_VERB_SET_PROC_COEF. This only affects the regmap coefficient cache path used by codecs that set codec->cache_coef. Direct coefficient helpers already use the normal SET_COEF_INDEX followed by GET_PROC_COEF or SET_PROC_COEF sequence, which is likely why this has not been noticed widely. Use AC_VERB_GET_PROC_COEF for cached coefficient reads and AC_VERB_SET_PROC_COEF for cached coefficient writes. Fixes: 40ba66a702b8 ("ALSA: hda - Add cache support for COEF read/write") Cc: stable@vger.kernel.org Signed-off-by: Xu Rao Link: https://patch.msgid.link/DB9023BF2920BA99+20260707132419.1731342-1-raoxu@uniontech.com Signed-off-by: Takashi Iwai Signed-off-by: Sasha Levin --- sound/hda/hdac_regmap.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/sound/hda/hdac_regmap.c b/sound/hda/hdac_regmap.c index 97cee096a2864f..1ebc6dcc66893f 100644 --- a/sound/hda/hdac_regmap.c +++ b/sound/hda/hdac_regmap.c @@ -214,7 +214,7 @@ static int hda_reg_read_coef(struct hdac_device *codec, unsigned int reg, err = snd_hdac_exec_verb(codec, verb, 0, NULL); if (err < 0) return err; - verb = (reg & ~0xfffff) | (AC_VERB_GET_COEF_INDEX << 8); + verb = (reg & ~0xfffff) | (AC_VERB_GET_PROC_COEF << 8); return snd_hdac_exec_verb(codec, verb, 0, val); } @@ -232,7 +232,7 @@ static int hda_reg_write_coef(struct hdac_device *codec, unsigned int reg, err = snd_hdac_exec_verb(codec, verb, 0, NULL); if (err < 0) return err; - verb = (reg & ~0xfffff) | (AC_VERB_GET_COEF_INDEX << 8) | + verb = (reg & ~0xfffff) | (AC_VERB_SET_PROC_COEF << 8) | (val & 0xffff); return snd_hdac_exec_verb(codec, verb, 0, NULL); } -- 2.53.0