From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out-184.mta0.migadu.com (out-184.mta0.migadu.com [91.218.175.184]) (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 5AA3438E8D9; Wed, 3 Jun 2026 06:57:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.218.175.184 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780469824; cv=none; b=R1GWkCKhAIki79cq7gJG+2Dtf2aRxsp7I2b8tUjbM6ZAM5NVkzykzds4YgQw6hZFfFb/OPC5XZGNbUd7hkZCJrrcMP/QMSI9bpQkPy6khGqe1KrKGJDKnBFsMkUKrdYIdUod363Z5BAwmrNYKL9s6SOSIOY3vu6bboDXj25jXoQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780469824; c=relaxed/simple; bh=InlKBdW6y2nYfFlv+fbHgsuviW36QJoiIp+24c7L2FY=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=K2TvZatbW0XHlFS8icVC1dQcSSoAlFlwD5DZRQpTNAXj44bYrW4V37G5sMPJH8ePWet4MGG/jupGjr+DdJtOAc4l3Ox70L+MHuShk8tBe7RtIbWNqKQ0DluFRFwsjxhv6gTiv+BDWaJlQFV+w8dVK3yhzwmQgHnJQosEnLkp9rc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=rIK5MRSv; arc=none smtp.client-ip=91.218.175.184 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="rIK5MRSv" X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1780469821; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=O8Xg5kMwDiZhGeMRVTNH+BvulIB1WnOcW2ZagQP3CFk=; b=rIK5MRSvJMhGbgcFg2/hFu41L7GB22rFuJJ8sCSLP3JF4ved/EdhekTHLWXRd4Ck6vfqTC ZjCwOFCQMJTsu/s0X9ECE1/Ab7xYJX60Y21Jg2eFovLw7EmeVhPaiZBITF1li2NKwtCqrn /Yhu30lzy6dZ5G5HHc7NZJvD5XTJjw0= From: Fushuai Wang To: fushuai.wang@linux.dev Cc: alan@linux.intel.com, andy.shevchenko@gmail.com, gregkh@linuxfoundation.org, ilpo.jarvinen@linux.intel.com, jackzxcui1989@163.com, jirislaby@kernel.org, kees@kernel.org, linux-kernel@vger.kernel.org, linux-serial@vger.kernel.org, osama.abdelkader@gmail.com, sean@mess.org, wangfushuai@baidu.com Subject: Re: [PATCH v3] serial: 8250: Clear CON_PRINTBUFFER on port re-registration Date: Wed, 3 Jun 2026 14:56:42 +0800 Message-Id: <20260603065642.7575-1-fushuai.wang@linux.dev> In-Reply-To: <20260522101042.21976-1-fushuai.wang@linux.dev> References: <20260522101042.21976-1-fushuai.wang@linux.dev> Precedence: bulk X-Mailing-List: linux-serial@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Migadu-Flow: FLOW_OUT > diff --git a/drivers/tty/serial/8250/8250_core.c b/drivers/tty/serial/8250/8250_core.c > index a428e88938eb..5419f1d22d47 100644 > --- a/drivers/tty/serial/8250/8250_core.c > +++ b/drivers/tty/serial/8250/8250_core.c > @@ -716,8 +716,12 @@ int serial8250_register_8250_port(const struct uart_8250_port *up) > if (uart->port.type == PORT_8250_CIR) > return -ENODEV; > > - if (uart->port.dev) > + if (uart->port.dev) { > + if (uart_console(&uart->port)) > + uart->port.cons->flags &= ~CON_PRINTBUFFER; > + > uart_remove_one_port(&serial8250_reg, &uart->port); > + } > > uart->port.ctrl_id = up->port.ctrl_id; > uart->port.port_id = up->port.port_id; ping. -- Regards, WANG