From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0613B2C21F3; Thu, 9 Oct 2025 11:49:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=193.142.43.55 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760010575; cv=none; b=WJhbwCyscODD5fA+9jZVMBkAgUE0Nk3nDfZ8qJqZiXtJeSoDjpuDldzm7SV4lF0LemiIHIWWELhvyXTxOj8WVu3jj/njfnYk2ExuRxoqYEvSzEX14/9XIMA+SRGCq0ijQjlgANvYNUkS/KS1vvqKI4E4ot7PrY2gqzZRG1J0xNo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760010575; c=relaxed/simple; bh=qUs/uHMz1ZFaC1vVPhGntEv/oQ5mWSJtmvzToYMMDb0=; h=From:To:Cc:Subject:In-Reply-To:References:Date:Message-ID: MIME-Version:Content-Type; b=pzvBXXXeMpAPalOQPEyj0WNsZwt50ZtrEHwu0fxcJSoL3K6G+mZhjbnVhAWFrbNQQ4CKoYcg3mbSCorbEPjSyHq6zEDg0Pq/+Qydy616mTBKzxYboCWlmB5kmMMxlTGOy2JOMDmDMOi2A2bAXMKkW6Zc3tmMFvG2l5ExeVWh5eQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de; spf=pass smtp.mailfrom=linutronix.de; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=M2j0Yq17; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=AHnSRfah; arc=none smtp.client-ip=193.142.43.55 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linutronix.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="M2j0Yq17"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="AHnSRfah" From: John Ogness DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1760010570; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=qUs/uHMz1ZFaC1vVPhGntEv/oQ5mWSJtmvzToYMMDb0=; b=M2j0Yq17Aa9BO0ldHx7ChlTzkafsSLYC3+ZEIdgJ5R/vhTWdhGhUE1Fn7HMeUpoiK2xI33 zQn+ZBCd/sVH40AR3v0KshhXx3bA8TtxO54P/6o1oQMxddr2t/sRif8D9gkgr1tDmPR+9K jQzI6nfhVRccjkBRQiTy3a4+qjDmvOZGJqgQHfawXPAqD47MOoDRoMcK7ZCwm23MuJuVBj kjDZHbVqHMQ/cdOdViE9fudGfhzGaY40iDKj2C4ruCuSvAlqfRy/PpQu3uO8fNCsCPE1UL RAmZvb1zBzLZVCbKGimN9o7EwmjYnWMXsx8keJHHCSZulaUT3iNUCTO0w3c9GQ== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1760010570; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=qUs/uHMz1ZFaC1vVPhGntEv/oQ5mWSJtmvzToYMMDb0=; b=AHnSRfahOip7Dg6a2LaDWYUTPeW3O5fdJcjXdScXdf7qK7okNw30a+ltLoN8/WhVnMiULd 2WM6WvlYQ5AIsuCQ== To: Thierry Reding Cc: Jon Hunter , Greg Kroah-Hartman , Thierry Reding , Jiri Slaby , Petr Mladek , Sergey Senozhatsky , Steven Rostedt , Thomas Gleixner , Esben Haabendal , linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org, Andy Shevchenko , Arnd Bergmann , Tony Lindgren , Niklas Schnelle , Serge Semin , "linux-tegra@vger.kernel.org" Subject: Re: [PATCH tty-next v5 5/6] serial: 8250: Switch to nbcon console In-Reply-To: References: <20250107212702.169493-1-john.ogness@linutronix.de> <20250107212702.169493-6-john.ogness@linutronix.de> <80b020fc-c18a-4da4-b222-16da1cab2f4c@nvidia.com> <84a521pets.fsf@jogness.linutronix.de> <92b787f4-1f51-4974-9e58-231dddd4b8f2@nvidia.com> Date: Thu, 09 Oct 2025 13:55:29 +0206 Message-ID: <844is8qoqe.fsf@jogness.linutronix.de> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain Hi Thierry, On 2025-10-09, Thierry Reding wrote: >> Thierry, do you have a Tegra124 Jetson TK1 handy to test this change on? > > Yes, I do. I reapplied patches 5 and 6 from the series (resolved a tiny > conflict for patch 5) and reran the tests. Same results as back in > January, though. Basically the first suspend doesn't work (it exits back > to userspace after a few seconds) and the second attempt then hangs. No > idea why that would be happpening. [...] > John, I'm happy to test any other patches if you've got any ideas on > what could be wrong. Thanks for your support. I created a branch on a public git repository [0] so that we have a common source to work with. I will push additional debug-commits on top. I am taking this email-debugging-session offlist. I will post again to this thread once we come to some conclusion. John [0] https://github.com/Linutronix/linux (branch nvidia/debug-8250-nbcon)