Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760529AbXH3Pbr (ORCPT ); Thu, 30 Aug 2007 11:31:47 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1757745AbXH3Pbj (ORCPT ); Thu, 30 Aug 2007 11:31:39 -0400 Received: from smtp-104-thursday.noc.nerim.net ([62.4.17.104]:2637 "EHLO mallaury.nerim.net" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1757621AbXH3Pbi convert rfc822-to-8bit (ORCPT ); Thu, 30 Aug 2007 11:31:38 -0400 Date: Thu, 30 Aug 2007 17:32:32 +0200 From: Jean Delvare To: "Francis Moreau" Cc: linux-kernel@vger.kernel.org Subject: Re: i2c transfers during interrupt context Message-ID: <20070830173232.270c6f70@hyperion.delvare> In-Reply-To: <38b2ab8a0708300655n7ae6a445y84150ab1bdcdf2d4@mail.gmail.com> References: <38b2ab8a0708300311x5479effn5999ba118221a47f@mail.gmail.com> <38b2ab8a0708300655n7ae6a445y84150ab1bdcdf2d4@mail.gmail.com> X-Mailer: Sylpheed-Claws 2.5.5 (GTK+ 2.10.6; x86_64-suse-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 723 Lines: 22 Bonjour Francis ;) On Thu, 30 Aug 2007 15:55:49 +0200, Francis Moreau wrote: > I have a very simple question about i2c transfers. > > I'm wondering if I'm allowed to initiate some very short i2c transfers > in an interrupt handler. Non. Tu n'as pas le droit de dormir dans un gestionnaire d'interruption, et la majorit? des pilotes I2C dorment pendant les transferts. Si tu as besoin de faire ce genre de chose il faut typiquement passer par une workqueue. -- Jean Delvare - 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/