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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 62BD7C433EF for ; Wed, 8 Jun 2022 09:29:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234917AbiFHJ3w (ORCPT ); Wed, 8 Jun 2022 05:29:52 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52364 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234928AbiFHJ33 (ORCPT ); Wed, 8 Jun 2022 05:29:29 -0400 Received: from wp530.webpack.hosteurope.de (wp530.webpack.hosteurope.de [IPv6:2a01:488:42:1000:50ed:8234::]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9E8F69EB42 for ; Wed, 8 Jun 2022 01:54:55 -0700 (PDT) Received: from [2a02:8108:963f:de38:eca4:7d19:f9a2:22c5]; authenticated by wp530.webpack.hosteurope.de running ExIM with esmtpsa (TLS1.3:ECDHE_RSA_AES_128_GCM_SHA256:128) id 1nyrSm-0006jh-1d; Wed, 08 Jun 2022 10:54:52 +0200 Message-ID: <2725aaed-6c31-2cce-dcd2-55f2f1ed533c@leemhuis.info> Date: Wed, 8 Jun 2022 10:54:48 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.10.0 Subject: Re: [REGRESSION] gpio: omap: ensure irq is enabled before wakeup Content-Language: en-US To: Eric Schikschneit , "stable@vger.kernel.org" Cc: "regressions@lists.linux.dev" , "rmk+kernel@armlinux.org.uk" , "grygorii.strashko@ti.com" , "tony@atomide.com" , "linus.walleij@linaro.org" References: From: Thorsten Leemhuis In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-bounce-key: webpack.hosteurope.de;regressions@leemhuis.info;1654678495;4d9e7413; X-HE-SMSGID: 1nyrSm-0006jh-1d Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org On 07.06.22 13:58, Eric Schikschneit wrote: > I am limited by the availability of the preempt-rt kernels that are > available on the yocto project. The newest kernel I see listed is > 5.15.44 on: https://git.yoctoproject.org/linux-yocto/ Well, it's up to Russel if that is enough for him, as he authored c859e0d479b3 ("gpio: omap: ensure irq is enabled before wakeup") and thus should look into this regression. Ciao, Thorsten > From: Thorsten Leemhuis > Sent: Tuesday, June 7, 2022 5:07 AM > To: Eric Schikschneit ; stable@vger.kernel.org > Cc: regressions@lists.linux.dev ; rmk+kernel@armlinux.org.uk ; grygorii.strashko@ti.com ; tony@atomide.com ; linus.walleij@linaro.org > Subject: Re: [REGRESSION] gpio: omap: ensure irq is enabled before wakeup >   > Hi, this is your Linux kernel regression tracker. > > On 01.06.22 17:56, Eric Schikschneit wrote: >> Summary: OMAP patch causes SPI bus transaction failure on TI CPU >> Commit: c859e0d479b3b4f6132fc12637c51e01492f31f6 Kernel version: >> 5.10.87 >> >> The detailed description: >> >> I know this is a old commit at this point, > > That shouldn't be a problem at all, but it raises one question that > would be good to get answered: does this problem still occur with the > latest code? This issue for example might have been fixed in between, > but maybe the fix was to complex to get backported or something like > that. Hence it would be ideal if you could quickly give 5.19-rc1 a shot; > 5.18.y is not ideal, but will do as well. > >> but we have observed a >> regression caused by this commit. It causes improper toggle during a >> SPI transaction with a microcontroller. The CPU in use is Texas >> Instruments AM3352BZCZA80. The microcontroller in use is a PIC based >> micro. I have logic capture images available to show the signal >> difference that is causing confusion on the SPI bus. > > Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat) > > P.S.: As the Linux kernel's regression tracker I deal with a lot of > reports and sometimes miss something important when writing mails like > this. If that's the case here, don't hesitate to tell me in a public > reply, it's in everyone's interest to set the public record straight.