+static int __init add_acpi_hid_device(u8 *hid, u8 *uid, u16 *devid,
+ bool cmd_line)
+{
+ struct acpihid_map_entry *entry;
+ struct list_head *list = &acpihid_map;
+
+ list_for_each_entry(entry, list, list) {
+ if (strcmp(entry->hid, hid) ||
+ (*uid && *entry->uid && strcmp(entry->uid, uid)) ||
+ !entry->cmd_line)
+ continue;
+
+ pr_info("AMD-Vi: Command-line override for hid:%s uid:%s\n",
+ hid, uid);
+ *devid = entry->devid;
+ return 0;
+ }
+
+ entry = kzalloc(sizeof(*entry), GFP_KERNEL);
+ if (!entry)
+ return -ENOMEM;
+
+ memcpy(entry->uid, uid, strlen(uid));
+ memcpy(entry->hid, hid, strlen(hid));
+ entry->devid = *devid;
+ entry->cmd_line = cmd_line;
+ entry->root_devid = (entry->devid & (~0x7));
+
+ pr_info("AMD-Vi:%s, add hid:%s, uid:%s, rdevid:%d\n",
+ entry->cmd_line ? "cmd" : "ivrs",
+ entry->hid, entry->uid, entry->root_devid);
+
+ list_add_tail(&entry->list, list);
+ return 0;
+}
+