From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261976AbVGZUr5 (ORCPT ); Tue, 26 Jul 2005 16:47:57 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261912AbVGZUry (ORCPT ); Tue, 26 Jul 2005 16:47:54 -0400 Received: from taxbrain.com ([64.162.14.3]:25108 "EHLO petzent.com") by vger.kernel.org with ESMTP id S261929AbVGZUpg (ORCPT ); Tue, 26 Jul 2005 16:45:36 -0400 From: "karl malbrain" To: "Russell King" Cc: "Linux-Kernel@Vger. Kernel. Org" Subject: RE: 2.6.9 chrdev_open: serial_core: uart_open Date: Tue, 26 Jul 2005 13:45:25 -0700 Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.6604 (9.0.2911.0) X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1441 Importance: Normal In-Reply-To: <20050715225417.E23709@flint.arm.linux.org.uk> X-Spam-Processed: petzent.com, Tue, 26 Jul 2005 13:41:42 -0700 (not processed: message from valid local sender) X-Return-Path: karl@petzent.com X-MDaemon-Deliver-To: linux-kernel@vger.kernel.org X-MDAV-Processed: petzent.com, Tue, 26 Jul 2005 13:41:43 -0700 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Successful resolution!! The red-hat engineers monitoring their bugzilla list posted a fix for tty_io.c Friday that works. Thanks again for your help. karl m > -----Original Message----- > From: Russell King > Sent: Friday, July 15, 2005 2:54 PM > To: karl malbrain > Cc: Linux-Kernel@Vger. Kernel. Org > Subject: Re: 2.6.9 chrdev_open: serial_core: uart_open > > > On Fri, Jul 15, 2005 at 02:17:01PM -0700, karl malbrain wrote: > > > -----Original Message----- > > > From: Russell King > > > Sent: Friday, July 15, 2005 1:59 PM > > > To: karl malbrain > > > Cc: Linux-Kernel@Vger. Kernel. Org > > > Subject: Re: 2.6.9 chrdev_open: serial_core: uart_open > > > > > > > > > On Fri, Jul 15, 2005 at 01:52:15PM -0700, karl malbrain wrote: > > > > On my 2.6.9-11EL source it clearly shows the up(&tty_sem) after > > > the call to > > > > uart_open. Init_dev never touches tty_sem. > > > > > > In which case, I have to say... > > > > > > Congratulations! You've found a bug with Red Hat's Enterprise Linux > > > kernel! Go straight to Red Hat's bugzilla! Do not collect 200$. Do > > > not pass go. > > > > > > Seriously though, this bug is not present in mainline kernels, so I > > > can't resolve this issue for you. Mainline kernels appear to work > > > properly. > > > > Could tty_io.c be all that changed by a small set of red-hat patches to > > 2.6.9? Why would they need to go in there to make so many > changes in the > > first place? Which 2.6 release changed tty_io.c's use of tty_sem so > > heavily? > > These are questions to ask of Red Hat, and can only be answered by > their representatives. > > Thanks anyway, and I'm sorry that this hasn't been resolved given > the amount of time put into it by both of us. > > -- > Russell King > Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/ > maintainer of: 2.6 Serial core