diff options
Diffstat (limited to 'drivers/base/core.c')
| -rw-r--r-- | drivers/base/core.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/base/core.c b/drivers/base/core.c index a979bc3f49a99..d0f84ff78776f 100644 --- a/drivers/base/core.c +++ b/drivers/base/core.c @@ -29,6 +29,22 @@ int (*platform_notify_remove)(struct device * dev) = NULL; * sysfs bindings for devices. */ +/** + * dev_driver_string - Return a device's driver name, if at all possible + * @dev: struct device to get the name of + * + * Will return the device's driver's name if it is bound to a device. If + * the device is not bound to a device, it will return the name of the bus + * it is attached to. If it is not attached to a bus either, an empty + * string will be returned. + */ +const char *dev_driver_string(struct device *dev) +{ + return dev->driver ? dev->driver->name : + (dev->bus ? dev->bus->name : ""); +} +EXPORT_SYMBOL_GPL(dev_driver_string); + #define to_dev(obj) container_of(obj, struct device, kobj) #define to_dev_attr(_attr) container_of(_attr, struct device_attribute, attr) |