From mboxrd@z Thu Jan 1 00:00:00 1970 From: Zhang Rui 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> References: <1389689198-2641-1-git-send-email-rui.zhang@intel.com> 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 To: linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, linux-i2c@vger.kernel.org, linux-spi@vger.kernel.org Return-path: In-Reply-To: <1389689198-2641-1-git-send-email-rui.zhang@intel.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-spi.vger.kernel.org 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 --- 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) { -- 1.7.9.5