root/sound/aoa/soundbus/sysfs.c

DEFINITIONS

1. modalias_show

#include <linux/kernel.h>
#include <linux/stat.h>
/* FIX UP */
#include "soundbus.h"

#define soundbus_config_of_attr(field, format_string)                   \
static ssize_t                                                          \
field##_show (struct device *dev, struct device_attribute *attr,        \
              char *buf)                                                \
{                                                                       \
        struct soundbus_dev *mdev = to_soundbus_device (dev);           \
        return sprintf (buf, format_string, mdev->ofdev.node->field);   \
}

static ssize_t modalias_show(struct device *dev, struct device_attribute *attr,
                             char *buf)
{
        struct soundbus_dev *sdev = to_soundbus_device(dev);
        struct of_device *of = &sdev->ofdev;
        int length;

        if (*sdev->modalias) {
                strlcpy(buf, sdev->modalias, sizeof(sdev->modalias) + 1);
                strcat(buf, "\n");
                length = strlen(buf);
        } else {
                length = sprintf(buf, "of:N%sT%s\n",
                                 of->node->name, of->node->type);
        }

        return length;
}

soundbus_config_of_attr (name, "%s\n");
soundbus_config_of_attr (type, "%s\n");

struct device_attribute soundbus_dev_attrs[] = {
        __ATTR_RO(name),
        __ATTR_RO(type),
        __ATTR_RO(modalias),
        __ATTR_NULL
};