diff options
| author | Zhang Rui <rui.zhang@intel.com> | 2014-01-14 16:46:38 +0800 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2014-01-17 01:59:15 +0100 |
| commit | b9f73067f32531db608e469a9ad20ce631e34550 (patch) | |
| tree | d3377f695cbdb34e9873846f8dbac79f883d5014 | |
| parent | 8c4ff6d0094a16809a7ecdd49d71cf06b0a51326 (diff) | |
platform: introduce OF style 'modalias' support for platform bus
Fix a problem that, the platform bus supports the OF style modalias
in .uevent() call, but not in its device 'modalias' sysfs attribute.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| -rw-r--r-- | drivers/base/platform.c | 4 | ||||
| -rw-r--r-- | drivers/of/device.c | 3 | ||||
| -rw-r--r-- | include/linux/of_device.h | 6 |
3 files changed, 13 insertions, 0 deletions
diff --git a/drivers/base/platform.c b/drivers/base/platform.c index 2f4aea2428b..bc78848dd59 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 f685e55e071..dafb9736ab9 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 82ce324fdce..8d7dd6768cb 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) { |