From patchwork Thu Aug 20 07:07:17 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Javier Martinez Canillas X-Patchwork-Id: 7041281 Return-Path: X-Original-To: patchwork-linux-omap@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 60E2CC05AC for ; Thu, 20 Aug 2015 07:13:07 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 86D6A20386 for ; Thu, 20 Aug 2015 07:13:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9315A20389 for ; Thu, 20 Aug 2015 07:13:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752601AbbHTHIH (ORCPT ); Thu, 20 Aug 2015 03:08:07 -0400 Received: from lists.s-osg.org ([54.187.51.154]:58717 "EHLO lists.s-osg.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752375AbbHTHIG (ORCPT ); Thu, 20 Aug 2015 03:08:06 -0400 Received: from localhost.localdomain (95.111.23.95.dynamic.jazztel.es [95.23.111.95]) by lists.s-osg.org (Postfix) with ESMTPSA id C1F6C4632A; Thu, 20 Aug 2015 00:08:03 -0700 (PDT) From: Javier Martinez Canillas To: linux-kernel@vger.kernel.org Cc: Javier Martinez Canillas , linux-fbdev@vger.kernel.org, Jean-Christophe Plagniol-Villard , Tomi Valkeinen , linux-omap@vger.kernel.org Subject: [PATCH 04/18] OMAPDSS: panel-sony-acx565akm: Export OF module alias information Date: Thu, 20 Aug 2015 09:07:17 +0200 Message-Id: <1440054451-1223-5-git-send-email-javier@osg.samsung.com> X-Mailer: git-send-email 2.4.3 In-Reply-To: <1440054451-1223-1-git-send-email-javier@osg.samsung.com> References: <1440054451-1223-1-git-send-email-javier@osg.samsung.com> Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org X-Spam-Status: No, score=-7.5 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The SPI core always reports the MODALIAS uevent as "spi:" regardless of the mechanism that was used to register the device (i.e: OF or board code) and the table that is used later to match the driver with the device (i.e: SPI id table or OF match table). So drivers needs to export the SPI id table and this be built into the module or udev won't have the necessary information to autoload the needed driver module when the device is added. But this means that OF-only drivers needs to have both OF and SPI id tables that have to be kept in sync and also the dev node compatible manufacturer prefix is stripped when reporting the MODALIAS. Which can lead to issues if two vendors use the same SPI device name for example. To avoid the above, the SPI core behavior may be changed in the future to not require an SPI device table for OF-only drivers and report the OF module alias. So, it's better to also export the OF table even when is unused now to prevent breaking module loading when the core changes. Signed-off-by: Javier Martinez Canillas --- drivers/video/fbdev/omap2/displays-new/panel-sony-acx565akm.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/video/fbdev/omap2/displays-new/panel-sony-acx565akm.c b/drivers/video/fbdev/omap2/displays-new/panel-sony-acx565akm.c index 90cbc4c3406c..c581231c74a5 100644 --- a/drivers/video/fbdev/omap2/displays-new/panel-sony-acx565akm.c +++ b/drivers/video/fbdev/omap2/displays-new/panel-sony-acx565akm.c @@ -898,6 +898,7 @@ static const struct of_device_id acx565akm_of_match[] = { { .compatible = "omapdss,sony,acx565akm", }, {}, }; +MODULE_DEVICE_TABLE(of, acx565akm_of_match); static struct spi_driver acx565akm_driver = { .driver = {