From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1422810AbWGJUeU (ORCPT ); Mon, 10 Jul 2006 16:34:20 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1422811AbWGJUeU (ORCPT ); Mon, 10 Jul 2006 16:34:20 -0400 Received: from khc.piap.pl ([195.187.100.11]:26241 "EHLO khc.piap.pl") by vger.kernel.org with ESMTP id S1422810AbWGJUeT (ORCPT ); Mon, 10 Jul 2006 16:34:19 -0400 To: "Antonino A. Daplas" Cc: "Antonino A. Daplas" , Jean Delvare , Andrew Morton , lkml Subject: Re: [PATCH v2] cirrus-logic-framebuffer-i2c-support.patch References: <200607050147.k651kxmT023763@shell0.pdx.osdl.net> <20060705165255.ab7f1b83.khali@linux-fr.org> <44B196ED.1070804@pol.net> <44B226E8.40104@pol.net> <44B2398B.7040300@pol.net> <44B248E4.2020506@pol.net> <44B26004.4050500@gmail.com> <44B2808F.8000901@pol.net> From: Krzysztof Halasa Date: Mon, 10 Jul 2006 22:34:17 +0200 In-Reply-To: <44B2808F.8000901@pol.net> (Antonino A. Daplas's message of "Tue, 11 Jul 2006 00:30:07 +0800") Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org "Antonino A. Daplas" writes: > This is no-man's land. Basically X grabs the VT with KD_GRAPHICS mode > set. When in KD_GRAPHICS mode, the framebuffer console will not > send any commands to the drivers. The problem is trying to do > framebuffer operation while in X, we don't have any guards on that. > Just try fbset mymode while in X. You mean it will not bomb? Good, but still there is I2C question - can I2C accesses to the graphics chip corrupt X11 and vice versa? I can't see anything preventing that, and while we can disable graphic operations while Xserver is running, we can't disable I2C (non-DDC). Probably X11 should be disallowed to use I2C directly? I should probably Cc: this to XOrg as well... -- Krzysztof Halasa