From e305166b86017833b6a0610174575f8fc8d9e41f Mon Sep 17 00:00:00 2001
From: Patrick Mochel <mochel@segfault.osdl.org>
Date: Mon, 25 Mar 2002 17:51:26 -0800
Subject: [PATCH] Ok, really add drivers/base/sys.c
---
drivers/base/sys.c | 48 ++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 48 insertions(+)
diff --git a/drivers/base/sys.c b/drivers/base/sys.c
index e69de29bb2d1..2336bd2c2dd2 100644
--- a/drivers/base/sys.c
+++ b/drivers/base/sys.c
@@ -0,0 +1,48 @@
+/*
+ * sys.c - pseudo-bus for system 'devices' (cpus, PICs, timers, etc)
+ *
+ * Copyright (c) 2002 Patrick Mochel
+ * 2002 Open Source Development Lab
+ *
+ * This exports a 'system' bus type.
+ * By default, a 'sys' bus gets added to the root of the system. There will
+ * always be core system devices. Devices can use register_sys_device() to
+ * add themselves as children of the system bus.
+ */
+
+#include <linux/device.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+
+static struct device system_bus = {
+ name: "System Bus",
+ bus_id: "sys",
+};
+
+int register_sys_device(struct device * dev)
+{
+ int error = -EINVAL;
+
+ if (dev) {
+ if (!dev->parent)
+ dev->parent = &system_bus;
+ error = device_register(dev);
+ }
+ return error;
+}
+
+void unregister_sys_device(struct device * dev)
+{
+ if (dev)
+ put_device(dev);
+}
+
+static int sys_bus_init(void)
+{
+ return device_register(&system_bus);
+}
+
+subsys_initcall(sys_bus_init);
+EXPORT_SYMBOL(register_sys_device);
+EXPORT_SYMBOL(unregister_sys_device);
--
2.30.9