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=-2.5 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS, USER_AGENT_MUTT 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 182A0C282D0 for ; Tue, 29 Jan 2019 17:19:14 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id D488F2087E for ; Tue, 29 Jan 2019 17:19:13 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="P1m1D4in" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D488F2087E Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=atomide.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=X4JGLDR9TCgH0YGHInHR6noCG9BzuCcmWC1TxQWdxu4=; b=P1m1D4inrGW9Tv 4SIybFS8fbxW49e5a9k28NeAD5kkneV4vkUqDy4WpPABNy73GaNGwPEl2OmYydFVTIJnX8ZculUxI QZ100+qd0Et9oVNByoj69a/6bq/+RNLKFKS2RVNCJza0rAJ5+AIuUKPvvMgaZNFTTP0iZoLPFMUvF e+gm1iEP8U+hI0M5+KaNUrNS7Wihl58KbpjXlaeLjrCEq7OHBDVD67I0ZkujOU6Ap/4ombKVJcPun +Xj7Q8uaKSlYuH8ztRJ2hUVTMwiIiQrHiM7u/YFUd/EnI0EokayevPRFvgn3NwQfmnet8MiY04/OP tQHKi8JJeuw0I4gzMGcQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1goX2O-0008Jp-SK; Tue, 29 Jan 2019 17:19:04 +0000 Received: from muru.com ([72.249.23.125]) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1goX29-00083w-UL for linux-arm-kernel@lists.infradead.org; Tue, 29 Jan 2019 17:18:51 +0000 Received: from atomide.com (localhost [127.0.0.1]) by muru.com (Postfix) with ESMTPS id D6600804F; Tue, 29 Jan 2019 17:18:57 +0000 (UTC) Date: Tue, 29 Jan 2019 09:18:46 -0800 From: Tony Lindgren To: Mark Brown Subject: Re: New underflow of regulator enable count warnings in v5.0-rc1 Message-ID: <20190129171846.GD5720@atomide.com> References: <20190129164813.GA5720@atomide.com> <20190129171151.GC5720@atomide.com> <20190129171538.GH10524@sirena.org.uk> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20190129171538.GH10524@sirena.org.uk> User-Agent: Mutt/1.11.2 (2019-01-07) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190129_091850_011393_9705AF93 X-CRM114-Status: UNSURE ( 9.08 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: LKML , linux-omap , Doug Anderson , Linux ARM , Sebastian Reichel Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org * Mark Brown [190129 17:15]: > On Tue, Jan 29, 2019 at 09:11:51AM -0800, Tony Lindgren wrote: > > > OK. Let's see if Sebastian spots where pwm_vibrator_start() > > and pwm_vibrator_stop() might get called multiple times > > or something similar. > > Given that nobody has noticed that the driver stops working entirely > it's possible that the pattern is something like: > > > pwm_vibrator_start() > pwm_vibrator_stop() > pwm_vibrator_stop() > pwm_vibrator_start() > > so it's a temporary underflow that gets corrected (or it could be that > not many people are using mainline kernels on these systems). On your > system it's the dummy driver but presumably some other users have it > connected to actual regulators. Yeah that makes sense. Regards, Tony _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel