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path: root/drivers/char/misc.c
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Diffstat (limited to 'drivers/char/misc.c')
-rw-r--r--drivers/char/misc.c15
1 files changed, 12 insertions, 3 deletions
diff --git a/drivers/char/misc.c b/drivers/char/misc.c
index a5e0db9..62c99fa 100644
--- a/drivers/char/misc.c
+++ b/drivers/char/misc.c
@@ -168,7 +168,6 @@ static const struct file_operations misc_fops = {
.open = misc_open,
};
-
/**
* misc_register - register a miscellaneous device
* @misc: device structure
@@ -217,8 +216,8 @@ int misc_register(struct miscdevice * misc)
misc_minors[misc->minor >> 3] |= 1 << (misc->minor & 7);
dev = MKDEV(MISC_MAJOR, misc->minor);
- misc->this_device = device_create(misc_class, misc->parent, dev, NULL,
- "%s", misc->name);
+ misc->this_device = device_create(misc_class, misc->parent, dev,
+ misc, "%s", misc->name);
if (IS_ERR(misc->this_device)) {
err = PTR_ERR(misc->this_device);
goto out;
@@ -264,6 +263,15 @@ int misc_deregister(struct miscdevice *misc)
EXPORT_SYMBOL(misc_register);
EXPORT_SYMBOL(misc_deregister);
+static char *misc_nodename(struct device *dev)
+{
+ struct miscdevice *c = dev_get_drvdata(dev);
+
+ if (c->devnode)
+ return kstrdup(c->devnode, GFP_KERNEL);
+ return NULL;
+}
+
static int __init misc_init(void)
{
int err;
@@ -279,6 +287,7 @@ static int __init misc_init(void)
err = -EIO;
if (register_chrdev(MISC_MAJOR,"misc",&misc_fops))
goto fail_printk;
+ misc_class->nodename = misc_nodename;
return 0;
fail_printk:
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