-struct chrdev_info {
- int index;
- struct char_device_struct *cd;
-};
-
-void *get_next_chrdev(void *dev)
-{
- struct chrdev_info *info;
-
- if (dev == NULL) {
- info = kmalloc(sizeof(*info), GFP_KERNEL);
- if (!info)
- goto out;
- info->index=0;
- info->cd = chrdevs[info->index];
- if (info->cd)
- goto out;
- } else {
- info = dev;
- }
-
- while (info->index < ARRAY_SIZE(chrdevs)) {
- if (info->cd)
- info->cd = info->cd->next;
- if (info->cd)
- goto out;
- /*
- * No devices on this chain, move to the next
- */
- info->index++;
- info->cd = (info->index < ARRAY_SIZE(chrdevs)) ?
- chrdevs[info->index] : NULL;
- if (info->cd)
- goto out;
- }
-
-out:
- return info;
-}