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 EBD69CD98E3 for ; Tue, 16 Jun 2026 15:08:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To:References: Subject:From:To:Cc:Message-Id:Date:Content-Type:Content-Transfer-Encoding: Mime-Version:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=EBs7aK9Ax6fMaFCay5iPgFUdd3Tp5vEneucNpM5vdFM=; b=cusZKcjo1R1jaT2RDyXLQrkcZt tNxB7jR0pjomjyaPmNfpUkkN5Hal1UYQTHjPXmXYfyWW12U1rq2Cdnxal7g2SZwdOvRYRQiHVxMUR eZCvutqiY2Ctp9YLsNFpiDNr5rDVnymJ9sPYPnqbjOuCenGhj+A/KIrPEw7RzzpFmTKMfIryfMmda VOm4+Vie7fFVLDgbc2FJo/vmYw4Nw+Io2SyxG5IE4jz0nURYzbGwhBr/CfJqQ4p2MVpTB2T88ZMMT eHSOvCqQcDIYrOuCLVTFJZzSZnOPTLhqgxKtX2WggGdlO2lHNEtH3EAvshBtyl3rSNxEEBXxqHz0G Seboec4g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wZVOw-0000000Fyku-29Py; Tue, 16 Jun 2026 15:08:30 +0000 Received: from smtpout-02.galae.net ([185.246.84.56]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wZVOY-0000000Fybc-0CQg for linux-arm-kernel@lists.infradead.org; Tue, 16 Jun 2026 15:08:08 +0000 Received: from smtpout-01.galae.net (smtpout-01.galae.net [212.83.139.233]) by smtpout-02.galae.net (Postfix) with ESMTPS id 0AA4A1A395A; Tue, 16 Jun 2026 15:08:01 +0000 (UTC) Received: from mail.galae.net (mail.galae.net [212.83.136.155]) by smtpout-01.galae.net (Postfix) with ESMTPS id D096B601A9; Tue, 16 Jun 2026 15:08:00 +0000 (UTC) Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id CEA1D106C9EBE; Tue, 16 Jun 2026 17:07:54 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=dkim; t=1781622479; h=from:subject:date:message-id:to:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:references; bh=EBs7aK9Ax6fMaFCay5iPgFUdd3Tp5vEneucNpM5vdFM=; b=NVv3zruaGYxD6uLc0Dkz0jkCucJNGC7apCS+4WPn2sVbSFDx2QGIYsz261nmI+KsXjmz6C KPHnro43cSEKKy2lbClsVYbRKSOLJJwjav+H+tvFIelYyNA1APl2ElxYXKrp58GcZtNNT9 0/xnKQyZWDnb0nQqGI5kQVH+bLnFji5CX1PmxXrpqllh56i1F49ui10N5G+WqtfP1nkXL/ 8ptRGhQhgawEHVGSyGYwvTcbdLp58+T88NcQx31GPXc53ycBQy3ZUkkyvUAx+kndq2r05h z2w9pUPkCscZ3sxtvljDmyUQz91sy1Ur4jImarFbfRLL3l5xUYAMq2SumoiVLg== Mime-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 Date: Tue, 16 Jun 2026 17:07:54 +0200 Message-Id: Cc: "Lukasz Raczylo" , "Steffen Jaeckel" To: "Andrea della Porta" , , "Nicolas Ferre" , "Claudiu Beznea" , "Andrew Lunn" , "David S . Miller" , "Eric Dumazet" , "Jakub Kicinski" , "Paolo Abeni" , , , , "Nicolai Buchwitz" From: =?utf-8?q?Th=C3=A9o_Lebrun?= Subject: Re: [PATCH v2] net: macb: add TX stall timeout callback to recover from lost TSTART write X-Mailer: aerc 0.21.0-0-g5549850facc2 References: <468f480454a314303bac6a54780b153f689f2267.1781598350.git.andrea.porta@suse.com> In-Reply-To: <468f480454a314303bac6a54780b153f689f2267.1781598350.git.andrea.porta@suse.com> X-Last-TLS-Session-Version: TLSv1.3 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260616_080806_245240_02FA56A6 X-CRM114-Status: UNSURE ( 8.82 ) X-CRM114-Notice: Please train this message. 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: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hello Andrea, On Tue Jun 16, 2026 at 3:23 PM CEST, Andrea della Porta wrote: > From: Lukasz Raczylo > > The MACB found in the Raspberry Pi RP1 suffers from sporadic stalls on > the TX queue. > While the exact root cause is not yet fully understood, it is likely > related to a hardware issue where a TSTART write to the NCR register > is missed, preventing the transmission from being kicked off. > > Implement a timeout callback to handle TX queue stalls, triggering the > existing restart mechanism to recover. > > Link: https://lore.kernel.org/all/20260514215459.36109-1-lukasz@raczylo.c= om/ > Fixes: dc110d1b23564 ("net: cadence: macb: Add support for Raspberry Pi R= P1 ethernet controller") > Signed-off-by: Lukasz Raczylo > Co-developed-by: Steffen Jaeckel > Signed-off-by: Steffen Jaeckel > Co-developed-by: Andrea della Porta > Signed-off-by: Andrea della Porta Thanks for this V2. Reviewed-by: Th=C3=A9o Lebrun Any news from the Raspberry Pi community about this bug investigation? Thanks, -- Th=C3=A9o Lebrun, Bootlin Embedded Linux and Kernel engineering https://bootlin.com