drivers/xen: make xenbus_dev_[front/back]end explicitly non-modular

The Makefile / Kconfig currently controlling compilation here is:

obj-y   += xenbus_dev_frontend.o
[...]
obj-$(CONFIG_XEN_BACKEND) += xenbus_dev_backend.o

...with:

drivers/xen/Kconfig:config XEN_BACKEND
drivers/xen/Kconfig:    bool "Backend driver support"

...meaning that they currently are not being built as modules by anyone.

Lets remove the modular code that is essentially orphaned, so that
when reading the driver there is no doubt it is builtin-only.

Since module_init translates to device_initcall in the non-modular
case, the init ordering remains unchanged with this commit.

We also delete the MODULE_LICENSE tag since all that information
is already contained at the top of the file in the comments.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Reviewed-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>

diff --git a/drivers/xen/xenbus/xenbus_dev_backend.c b/drivers/xen/xenbus/xenbus_dev_backend.c
index ee6d9efd7b768c44a40bc81172af685c03cab1ea..4a41ac9af966baf1c6e64f47e325d1c818ec8344 100644 (file)
--- a/drivers/xen/xenbus/xenbus_dev_backend.c
+++ b/drivers/xen/xenbus/xenbus_dev_backend.c
@@ -5,7 +5,7 @@
 #include <linux/mm.h>
 #include <linux/fs.h>
 #include <linux/miscdevice.h>
-#include <linux/module.h>
+#include <linux/init.h>
 #include <linux/capability.h>
 
 #include <xen/xen.h>
@@ -18,8 +18,6 @@
 
 #include "xenbus_comms.h"
 
-MODULE_LICENSE("GPL");
-
 static int xenbus_backend_open(struct inode *inode, struct file *filp)
 {
        if (!capable(CAP_SYS_ADMIN))
@@ -132,11 +130,4 @@ static int __init xenbus_backend_init(void)
                pr_err("Could not register xenbus backend device\n");
        return err;
 }
-
-static void __exit xenbus_backend_exit(void)
-{
-       misc_deregister(&xenbus_backend_dev);
-}
-
-module_init(xenbus_backend_init);
-module_exit(xenbus_backend_exit);
+device_initcall(xenbus_backend_init);

diff --git a/drivers/xen/xenbus/xenbus_dev_frontend.c b/drivers/xen/xenbus/xenbus_dev_frontend.c
index 9433e46518c8dc8680fd1e5a44d823aa7f65fdb0..8c0a359ab4a8620ae8343294acd77d6be4c8deb6 100644 (file)
--- a/drivers/xen/xenbus/xenbus_dev_frontend.c
+++ b/drivers/xen/xenbus/xenbus_dev_frontend.c
@@ -55,7 +55,7 @@
 #include <linux/string.h>
 #include <linux/slab.h>
 #include <linux/miscdevice.h>
-#include <linux/module.h>
+#include <linux/init.h>
 
 #include "xenbus_comms.h"
 
@@ -63,8 +63,6 @@
 #include <xen/xen.h>
 #include <asm/xen/hypervisor.h>
 
-MODULE_LICENSE("GPL");
-
 /*
  * An element of a list of outstanding transactions, for which we're
  * still waiting a reply.
@@ -624,11 +622,4 @@ static int __init xenbus_init(void)
                pr_err("Could not register xenbus frontend device\n");
        return err;
 }
-
-static void __exit xenbus_exit(void)
-{
-       misc_deregister(&xenbus_dev);
-}
-
-module_init(xenbus_init);
-module_exit(xenbus_exit);
+device_initcall(xenbus_init);