From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754681AbXF2UIs (ORCPT ); Fri, 29 Jun 2007 16:08:48 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752976AbXF2UIk (ORCPT ); Fri, 29 Jun 2007 16:08:40 -0400 Received: from postal.ampex.com ([65.201.33.131]:39142 "EHLO ampex.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752707AbXF2UIj (ORCPT ); Fri, 29 Jun 2007 16:08:39 -0400 X-Greylist: delayed 1816 seconds by postgrey-1.27 at vger.kernel.org; Fri, 29 Jun 2007 16:08:39 EDT Message-ID: <46855F19.5080900@ampex.com> Date: Fri, 29 Jun 2007 12:35:53 -0700 From: Li Juen Hwang User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.7) Gecko/20050427 Red Hat/1.7.7-1.1.3.4 X-Accept-Language: en-us, en MIME-Version: 1.0 To: linux1394-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org Subject: call request_irq before or after hardware initialization? References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-MailScanner-Information: Please contact the ISP for more information X-MailScanner: Not scanned: please contact your Internet E-Mail Service Provider for details X-MailScanner-SpamCheck: not spam (whitelisted), SpamAssassin (score=0, required 3, autolearn=not spam) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi, Most 1394 drivers on Linux, ohci1394 for instance, calls request_irq() before initializing/enabling hardware chip. I'd like to reverse the order so that driver can exit the kernel without calling free_irq() if hardware failed. Is that ok? will it cause side effect? Thanks. Li-Juen