参照元

説明

引数

返り値

参考

実装

/**
 * device_create - creates a device and registers it with sysfs
 * @class: pointer to the struct class that this device should be registered to
 * @parent: pointer to the parent struct device of this new device, if any
 * @devt: the dev_t for the char device to be added
 * @drvdata: the data to be added to the device for callbacks
 * @fmt: string for the device's name
 *
 * This function can be used by char device classes.  A struct device
 * will be created in sysfs, registered to the specified class.
 *
 * A "dev" file will be created, showing the dev_t for the device, if
 * the dev_t is not 0,0.
 * If a pointer to a parent struct device is passed in, the newly created
 * struct device will be a child of that device in sysfs.
 * The pointer to the struct device will be returned from the call.
 * Any further sysfs files that might be required can be created using this
 * pointer.
 *
 * Returns &struct device pointer on success, or ERR_PTR() on error.
 *
 * Note: the struct class passed to this function must have previously
 * been created with a call to class_create().
 */
struct device *device_create(struct class *class, struct device *parent,
                             dev_t devt, void *drvdata, const char *fmt, ...)
{
        va_list vargs;
        struct device *dev;
        va_start(vargs, fmt);
        dev = device_create_vargs(class, parent, devt, drvdata, fmt, vargs);
        va_end(vargs);
        return dev;
}
EXPORT_SYMBOL_GPL(device_create);

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Last-modified: 2016-04-21 (木) 09:16:13