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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id BCC69C761AF for ; Fri, 24 Mar 2023 10:13:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:Reply-To:List-Subscribe:List-Help: List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To:From:References: Cc:To:Subject:MIME-Version:Date:Message-ID:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=qrfI00ZKekz7y2fU+dQfzOCcDUqBXbvv4lxGr4gWoeQ=; b=0ugWRjCxE2F1jI FRchy4mqSysAhABInykgQCRD3DWDKgOfcaz2hop1qGx0spuVLpQ5Lg7T8YGtJBJZpt0i4LKI5KyPb 5Q6hItk/D40Rqnyl5Ee0rS5Qozb4d2mmyCKaiH/qm3bDQWtmGgyveP9g3MhEjecmc79wprMwAHz2I mKt+BPWsUiruU7h8U3AhG4rU4pU2SVCygOUVSq9uwwfKpFPzBpUG4epVIuj17J1LAc86dcO+VVDzs 7IUf4PiFr9ot7zxyA4Tg9RuC/XAGeudzSYmZz+9NKTDDAC7W1QyqHFNlCZ/ljfRLCycODe7gRjL+A mMlRrD+084GI9IlF6LKw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1pfePl-0047pf-32; Fri, 24 Mar 2023 10:12:53 +0000 Received: from wp530.webpack.hosteurope.de ([80.237.130.52]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1pfePY-0047hS-2d for linux-arm-kernel@lists.infradead.org; Fri, 24 Mar 2023 10:12:42 +0000 Received: from [2a02:8108:8980:2478:8cde:aa2c:f324:937e]; authenticated by wp530.webpack.hosteurope.de running ExIM with esmtpsa (TLS1.3:ECDHE_RSA_AES_128_GCM_SHA256:128) id 1pfePR-0000XK-8a; Fri, 24 Mar 2023 11:12:33 +0100 Message-ID: <74779ae2-a43a-eace-a314-a0a9535a41c2@leemhuis.info> Date: Fri, 24 Mar 2023 11:12:32 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.9.0 Subject: Re: Regression: serial: imx: overrun errors on debug UART Content-Language: en-US, de-DE To: Stefan Wahren , =?UTF-8?Q?Tomasz_Mo=c5=84?= , Greg Kroah-Hartman , Jiri Slaby Cc: =?UTF-8?Q?Uwe_Kleine-K=c3=b6nig?= , Sergey Organov , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , NXP Linux Team , linux-serial@vger.kernel.org, Linux ARM , Shawn Guo , Stefan Wahren References: <2c29454b-9369-4360-8eb4-c151f59460cb@i2se.com> From: "Linux regression tracking #adding (Thorsten Leemhuis)" In-Reply-To: <2c29454b-9369-4360-8eb4-c151f59460cb@i2se.com> X-bounce-key: webpack.hosteurope.de;regressions@leemhuis.info;1679652760;e9f64ed6; X-HE-SMSGID: 1pfePR-0000XK-8a X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230324_031240_995492_259E13D2 X-CRM114-Status: GOOD ( 16.56 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Linux regressions mailing list Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org [TLDR: I'm adding this report to the list of tracked Linux kernel regressions; the text you find below is based on a few templates paragraphs you might have encountered already in similar form. See link in footer if these mails annoy you.] On 24.03.23 09:57, Stefan Wahren wrote: > Hi, > > after switching to Linux 6.1.21 on our Tarragon board (i.MX6ULL SoC), we > experience the following issues with the debug UART (115200 baud, 8N1, > no hardware flow control): > > - overrun errors if we paste in multiple text lines while system is idle > - no reaction to single key strokes while system is on higher load > > After reverting 7a637784d517 ("serial: imx: reduce RX interrupt > frequency") the issue disappear. > > Maybe it's worth to mention that the Tarragon board uses two additional > application UARTs with similiar baud rates (9600 - 115200 baud, no > hardware flow control) for RS485 communication, but there are no overrun > errors (with and without the mention change). Thanks for the report. To be sure the issue doesn't fall through the cracks unnoticed, I'm adding it to regzbot, the Linux kernel regression tracking bot: #regzbot ^introduced 7a637784d517 #regzbot title serial: imx: overrun errors on debug UART #regzbot ignore-activity This isn't a regression? This issue or a fix for it are already discussed somewhere else? It was fixed already? You want to clarify when the regression started to happen? Or point out I got the title or something else totally wrong? Then just reply and tell me -- ideally while also telling regzbot about it, as explained by the page listed in the footer of this mail. Developers: When fixing the issue, remember to add 'Link:' tags pointing to the report (the parent of this mail). See page linked in footer for details. Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat) -- Everything you wanna know about Linux kernel regression tracking: https://linux-regtracking.leemhuis.info/about/#tldr That page also explains what to do if mails like this annoy you. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel