From patchwork Tue Jan 14 08:46:38 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zhang Rui X-Patchwork-Id: 3484681 Return-Path: X-Original-To: patchwork-linux-spi@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 17D779F382 for ; Tue, 14 Jan 2014 08:47:34 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 43DD7201C0 for ; Tue, 14 Jan 2014 08:47:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 43B49201C8 for ; Tue, 14 Jan 2014 08:47:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751616AbaANIrN (ORCPT ); Tue, 14 Jan 2014 03:47:13 -0500 Received: from mga11.intel.com ([192.55.52.93]:63516 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751567AbaANIrA (ORCPT ); Tue, 14 Jan 2014 03:47:00 -0500 Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga102.fm.intel.com with ESMTP; 14 Jan 2014 00:46:59 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.95,657,1384329600"; d="scan'208";a="464783342" Received: from unknown (HELO rzhang1-mobl4.ccr.corp.intel.com) ([10.255.21.143]) by fmsmga002.fm.intel.com with ESMTP; 14 Jan 2014 00:46:55 -0800 From: Zhang Rui To: linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, linux-i2c@vger.kernel.org, linux-spi@vger.kernel.org Cc: wsa@the-dreams.de, broonie@linaro.org, gregkh@linuxfoundation.org, rafael.j.wysocki@intel.com, grant.likely@linaro.org, rob.herring@calxeda.com, jarkko.nikula@linux.intel.com, mika.westerberg@linux.intel.com, Zhang Rui , devicetree@vger.kernel.org Subject: [PATCH 4/4] OF: introduce OF style 'modalias' support for platform bus. Date: Tue, 14 Jan 2014 16:46:38 +0800 Message-Id: <1389689198-2641-5-git-send-email-rui.zhang@intel.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1389689198-2641-1-git-send-email-rui.zhang@intel.com> References: <1389689198-2641-1-git-send-email-rui.zhang@intel.com> Sender: linux-spi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org X-Spam-Status: No, score=-7.0 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 Fix a problem that, the platform bus supports the OF style modalias in .uevent() call, but not in its device 'modalias' sysfs attribute. cc: devicetree@vger.kernel.org Signed-off-by: Zhang Rui Acked-by: Rob Herring --- drivers/base/platform.c | 4 ++++ drivers/of/device.c | 3 +++ include/linux/of_device.h | 6 ++++++ 3 files changed, 13 insertions(+) diff --git a/drivers/base/platform.c b/drivers/base/platform.c index 2f4aea2..bc78848 100644 --- a/drivers/base/platform.c +++ b/drivers/base/platform.c @@ -679,6 +679,10 @@ static ssize_t modalias_show(struct device *dev, struct device_attribute *a, struct platform_device *pdev = to_platform_device(dev); int len; + len = of_device_get_modalias(dev, buf, PAGE_SIZE -1); + if (len != -ENODEV) + return len; + len = acpi_device_modalias(dev, buf, PAGE_SIZE -1); if (len != -ENODEV) return len; diff --git a/drivers/of/device.c b/drivers/of/device.c index f685e55..dafb973 100644 --- a/drivers/of/device.c +++ b/drivers/of/device.c @@ -85,6 +85,9 @@ ssize_t of_device_get_modalias(struct device *dev, char *str, ssize_t len) int cplen, i; ssize_t tsize, csize, repend; + if ((!dev) || (!dev->of_node)) + return -ENODEV; + /* Name & Type */ csize = snprintf(str, len, "of:N%sT%s", dev->of_node->name, dev->of_node->type); diff --git a/include/linux/of_device.h b/include/linux/of_device.h index 82ce324..8d7dd67 100644 --- a/include/linux/of_device.h +++ b/include/linux/of_device.h @@ -64,6 +64,12 @@ static inline int of_driver_match_device(struct device *dev, static inline void of_device_uevent(struct device *dev, struct kobj_uevent_env *env) { } +static inline int of_device_get_modalias(struct device *dev, + char *str, ssize_t len) +{ + return -ENODEV; +} + static inline int of_device_uevent_modalias(struct device *dev, struct kobj_uevent_env *env) {