Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262165AbUKQDKP (ORCPT ); Tue, 16 Nov 2004 22:10:15 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262179AbUKQDKP (ORCPT ); Tue, 16 Nov 2004 22:10:15 -0500 Received: from fmr20.intel.com ([134.134.136.19]:65462 "EHLO orsfmr005.jf.intel.com") by vger.kernel.org with ESMTP id S262165AbUKQDKJ (ORCPT ); Tue, 16 Nov 2004 22:10:09 -0500 Subject: [PATCH]Teach drivers don't call may-sleep routines in resume code From: Li Shaohua To: lkml Cc: Andrew Morton Content-Type: text/plain Message-Id: <1100660643.7466.9.camel@sli10-desk.sh.intel.com> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.6 (1.4.6-2) Date: Wed, 17 Nov 2004 11:04:04 +0800 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 929 Lines: 25 Hi, We already found one driver (PCI link device driver) does the odd thing, so alert other drivers. Thanks, Shaohua --- 2.6/Documentation/power/devices.txt.orig 2004-11-17 10:42:25.160212832 +0800 +++ 2.6/Documentation/power/devices.txt 2004-11-17 10:46:11.070869192 +0800 @@ -70,6 +70,9 @@ System devices will only be suspended wi after all other devices have been suspended. On resume, they will be resumed before any other devices, and also with interrupts disabled. +*CAUTION*: The resume methods of drivers (normal devices and system devices) +should never use any may-sleep methods, since when resume from memory (S3), +no task is running. Runtime Power Management - 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/