Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263557AbUJ2Wct (ORCPT ); Fri, 29 Oct 2004 18:32:49 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263523AbUJ2Wax (ORCPT ); Fri, 29 Oct 2004 18:30:53 -0400 Received: from h-68-165-86-241.dllatx37.covad.net ([68.165.86.241]:4916 "EHLO sol.microgate.com") by vger.kernel.org with ESMTP id S263530AbUJ2WSi (ORCPT ); Fri, 29 Oct 2004 18:18:38 -0400 Subject: Re: [BUG][2.6.8.1] serial driver hangs SMP kernel, but not the UP kernel From: Paul Fulghum To: Russell King Cc: Tim_T_Murphy@Dell.com, Linux Kernel list In-Reply-To: <20041029212029.I31627@flint.arm.linux.org.uk> References: <4B0A1C17AA88F94289B0704CFABEF1AB0B4CC4@ausx2kmps304.aus.amer.dell.com> <20041029212029.I31627@flint.arm.linux.org.uk> Content-Type: text/plain Message-Id: <1099088289.5965.2.camel@at2.pipehead.org> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.5 (1.4.5-7) Date: Fri, 29 Oct 2004 17:18:09 -0500 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 625 Lines: 19 On Fri, 2004-10-29 at 15:20, Russell King wrote: > At a guess, you've enabled "low latency" setting on this port ? Ah, that would explain the problem better than the code path I saw (flip buffer full). The problem is still the same: calling the flip work routine from the ISR, which calls through N_TTY receive_buf->flush_chars->start_tx. -- Paul Fulghum paulkf@microgate.com - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/