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=-10.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED,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 C8652ECDE47 for ; Thu, 8 Nov 2018 22:00:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 844B7208E3 for ; Thu, 8 Nov 2018 22:00:23 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="ba7v2zVJ" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 844B7208E3 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linuxfoundation.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730475AbeKIHht (ORCPT ); Fri, 9 Nov 2018 02:37:49 -0500 Received: from mail.kernel.org ([198.145.29.99]:56494 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730428AbeKIHhr (ORCPT ); Fri, 9 Nov 2018 02:37:47 -0500 Received: from localhost (unknown [208.72.13.198]) (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 980B520892; Thu, 8 Nov 2018 22:00:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1541714418; bh=OWl9NWPu/6LlX6K1rVi8kHLF7o06ZcHului8Bk9MezI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ba7v2zVJJaCskwH7OyDbkql4okKS9sWmi21LxOYmxq5Dpbk2MWN/Q75mTm1BeMIX0 9hlagzrmhOyfOVprcqhj0qR6Y5Pz8vPxgMaDh9dmTeo4lwidT6aaDk3miwxrBykWeZ OK1lpGk0LbfsdyOCLwidTs+FzxCSyOKEHTnIvCY4= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Geert Uytterhoeven , Mark Brown , Sasha Levin Subject: [PATCH 4.4 042/114] ASoC: ak4613: Enable cache usage to fix crashes on resume Date: Thu, 8 Nov 2018 13:50:57 -0800 Message-Id: <20181108215104.935906051@linuxfoundation.org> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20181108215059.051093652@linuxfoundation.org> References: <20181108215059.051093652@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review 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 4.4-stable review patch. If anyone has any objections, please let me know. ------------------ [ Upstream commit dcd2d1f78664fdc75eadaaf65257834e24383d01 ] During system resume: kernel BUG at drivers/base/regmap/regcache.c:347! ... PC is at regcache_sync+0x1c/0x128 LR is at ak4613_resume+0x28/0x34 The ak4613 driver is using a regmap cache sync to restore the configuration of the chip on resume but does not actually define a register cache which means that the resume is never going to work and we trigger asserts in regmap. Fix this by enabling caching. Based on commit d3030d11961a8c10 ("ASoC: ak4642: Enable cache usage to fix crashes on resume") by Mark Brown . Signed-off-by: Geert Uytterhoeven Signed-off-by: Mark Brown Signed-off-by: Sasha Levin --- sound/soc/codecs/ak4613.c | 1 + 1 file changed, 1 insertion(+) diff --git a/sound/soc/codecs/ak4613.c b/sound/soc/codecs/ak4613.c index 07a266460ec3..b4b36cc92ffe 100644 --- a/sound/soc/codecs/ak4613.c +++ b/sound/soc/codecs/ak4613.c @@ -143,6 +143,7 @@ static const struct regmap_config ak4613_regmap_cfg = { .max_register = 0x16, .reg_defaults = ak4613_reg, .num_reg_defaults = ARRAY_SIZE(ak4613_reg), + .cache_type = REGCACHE_RBTREE, }; static const struct of_device_id ak4613_of_match[] = { -- 2.17.1