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path: root/arch/um/drivers/mmapper_kern.c
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Diffstat (limited to 'arch/um/drivers/mmapper_kern.c')
-rw-r--r--arch/um/drivers/mmapper_kern.c24
1 files changed, 20 insertions, 4 deletions
diff --git a/arch/um/drivers/mmapper_kern.c b/arch/um/drivers/mmapper_kern.c
index a63231dffe05..a37a5ac13c22 100644
--- a/arch/um/drivers/mmapper_kern.c
+++ b/arch/um/drivers/mmapper_kern.c
@@ -18,6 +18,7 @@
#include <linux/slab.h>
#include <linux/init.h>
#include <linux/smp_lock.h>
+#include <linux/miscdevice.h>
#include <asm/uaccess.h>
#include <asm/irq.h>
#include <asm/pgtable.h>
@@ -117,24 +118,39 @@ static struct file_operations mmapper_fops = {
.release = mmapper_release,
};
+static struct miscdevice mmapper_dev = {
+ .minor = MISC_DYNAMIC_MINOR,
+ .name = "mmapper",
+ .fops = &mmapper_fops
+};
+
static int __init mmapper_init(void)
{
+ int err;
+
printk(KERN_INFO "Mapper v0.1\n");
v_buf = (char *) find_iomem("mmapper", &mmapper_size);
if(mmapper_size == 0){
printk(KERN_ERR "mmapper_init - find_iomem failed\n");
- return(0);
+ goto out;
}
- p_buf = __pa(v_buf);
+ err = misc_register(&mmapper_dev);
+ if(err){
+ printk(KERN_ERR "mmapper - misc_register failed, err = %d\n",
+ err);
+ goto out;
+ }
- devfs_mk_cdev(MKDEV(30, 0), S_IFCHR|S_IRUGO|S_IWUGO, "mmapper");
- return(0);
+ p_buf = __pa(v_buf);
+out:
+ return 0;
}
static void mmapper_exit(void)
{
+ misc_deregister(&mmapper_dev);
}
module_init(mmapper_init);