Re: SET_MODULE_OWNER?

[Rusty Russell]

In message <[e-mail]> 
you write:
> (e.g. pci-dma api changes). Regardless, here is a typical use in a 
> netdriver.
> 
> 	/* dev and dev->priv zeroed in alloc_etherdev */
> 	dev = alloc_etherdev (sizeof (*tp));
> 	if (dev == NULL) {
> 		printk (KERN_ERR PFX "%s: Unable to alloc new net device\n", pd
ev->slot_name);
> 		return -ENOMEM;
> 	}
> 	SET_MODULE_OWNER(dev);
> 	tp = dev->priv;
> 	
> 	/* followed by ... */
> 	dev->foo = __foo;
> 	dev->bar = __bar;

I don't understand how that helps compatibility over:

	dev->owner = THIS_MODULE;

Both will:
1) Work on 2.4 and 2.5
2) Break on 2.2.

Confused,
Rusty.
--
  Anyone who quotes me in their sig is an idiot. -- Rusty Russell.