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=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 05F72C43387 for ; Mon, 7 Jan 2019 23:38:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CBE48218A6 for ; Mon, 7 Jan 2019 23:38:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727145AbfAGXih (ORCPT ); Mon, 7 Jan 2019 18:38:37 -0500 Received: from muru.com ([72.249.23.125]:60400 "EHLO muru.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726667AbfAGXih (ORCPT ); Mon, 7 Jan 2019 18:38:37 -0500 Received: from atomide.com (localhost [127.0.0.1]) by muru.com (Postfix) with ESMTPS id DED4E813A; Mon, 7 Jan 2019 23:38:42 +0000 (UTC) Date: Mon, 7 Jan 2019 15:38:33 -0800 From: Tony Lindgren To: Vincent Guittot , "Rafael J. Wysocki" Cc: Ulf Hansson , linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-omap@vger.kernel.org Subject: Regression in v5.0-rc1 with autosuspend hrtimers Message-ID: <20190107233833.GI5544@atomide.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.11.1 (2018-12-01) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi all, Looks like commit 8234f6734c5d ("PM-runtime: Switch autosuspend over to using hrtimers") caused a regression on at least omap5-uevm where 8250 UART rx wake no longer works. I have not noticed this happening on others so far. The devices I've tested all are using 8250 with dedicated wakeirqs configured for the rx pin. I can see the interrupt increase on omap5-uevm after some one or more keypresses, but then nothing. It seems that the uart just falls back asleep right away or something. Any ideas what might be going wrong? Regards, Tony