From mboxrd@z Thu Jan 1 00:00:00 1970 From: Russell King Subject: Re: Someting's busted with serial in 2.6.11 latest Date: Thu, 10 Mar 2005 22:51:51 +0000 Message-ID: <20050310225151.E1044@flint.arm.linux.org.uk> References: <20050309155049.4e7cb1f4@dxpl.pdx.osdl.net> <20050310195326.A1044@flint.arm.linux.org.uk> <4230CCCB.6030909@mesatop.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4230CCCB.6030909@mesatop.com>; from elenstev@mesatop.com on Thu, Mar 10, 2005 at 03:40:11PM -0700 Sender: linux-kernel-owner@vger.kernel.org To: Steven Cole Cc: Stephen Hemminger , linux-kernel@vger.kernel.org, linux-serial@vger.kernel.org List-Id: linux-serial@vger.kernel.org On Thu, Mar 10, 2005 at 03:40:11PM -0700, Steven Cole wrote: > Russell King wrote: > > On Wed, Mar 09, 2005 at 03:50:49PM -0800, Stephen Hemminger wrote: > > > >>Some checkin since 2.6.11 has caused the serial driver to > >>drop characters. Console output is chopped and messages are garbled. > >>Even the shell prompt gets truncated. > > > > > > There was a problem with 2.6.11-bk1 which should now be resolved. > > > > Is this still true of the latest bk kernel? Also, seeing the kernel > > messages may provide some hint. > > > > Here is a post I made perhaps relevant to this. > > http://marc.theaimsgroup.com/?l=linux-kernel&m=111042402103071&w=2 > > I'll test current bk tonight, but I don't see any recent fix to > drivers/serial/8250.c when browsing linux.bkbits.net/linux-2.6. There are only two recent revisions to 8250.c. One adds slightly buggy Xscale UART detection, the other fixes the buggyness. What I don't know is whether either of these two changes are the cause of your exact problems, because I don't actually know what you're testing. Since Stephen's bug is a lot more well defined than yours, it makes sense to tackle Stephen's situation first. The reason for this is taht pppd getting a SIGHUP doesn't actually tell me anything at all. -- Russell King Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/ maintainer of: 2.6 Serial core