Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759983Ab2BNJgO (ORCPT ); Tue, 14 Feb 2012 04:36:14 -0500 Received: from mga11.intel.com ([192.55.52.93]:47914 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759829Ab2BNJgI (ORCPT ); Tue, 14 Feb 2012 04:36:08 -0500 Message-Id: X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.71,315,1320652800"; d="scan'208";a="125197518" From: Chris Wilson Subject: Re: [PATCH] drm/i915: Fix single msg gmbus_xfers writes To: Daniel Vetter Cc: Daniel Vetter , Benson Leung , keithp@keithp.com, airlied@linux.ie, djkurtz@chromium.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org In-Reply-To: <20120213222623.GN5301@phenom.ffwll.local> References: <1328817797-4026-1-git-send-email-bleung@chromium.org> <20120213203838.GM5301@phenom.ffwll.local> <20120213222623.GN5301@phenom.ffwll.local> Date: Tue, 14 Feb 2012 09:35:58 +0000 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1186 Lines: 25 On Mon, 13 Feb 2012 23:26:23 +0100, Daniel Vetter wrote: > On Mon, Feb 13, 2012 at 09:49:35PM +0000, Chris Wilson wrote: > > On Mon, 13 Feb 2012 21:38:38 +0100, Daniel Vetter wrote: > > However, the outstanding issue is that we need to separate the gmbus > > i2c adapter from the gpio i2c adapter in order for the pairing to work > > with the expectations of the i2c core. > > There's another patch floating on dri-devel to add a gmbus_mutex. The > issue it tries to avoid is that multiple users corrupting each anothers > state when using the single gmbus controller. See "[PATCH] [PATCH] > drm/i915: Fix race condition in accessing GMBUS". Or have you thought of > another interaction that we need to sort out? The GMBUS interface is currently disabled because we confused the i2c core. https://bugzilla.kernel.org/show_bug.cgi?id=35572 -Chris -- Chris Wilson, Intel Open Source Technology Centre -- 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/