Re: two patches - request for comments

[Greg KH <greg@kroah.com>]

On Wed, Jun 02, 2004 at 01:57:40AM +0400, Andrew Zabolotny wrote:
> On Tue, 01 Jun 2004 17:23:11 -0400
> Jeff Garzik <jgarzik@pobox.com> wrote:
> 
> > Typical Linux usage to an item being registered is
> > 	ptr = alloc_foo()
> > 	register_foo(ptr)
> > 	unregister_foo(ptr)
> > 	free_foo()
> In this case it is:
> 
> register_lcd_device("foo", ...);
> ...
> unregister_lcd_device("foo");
> 
> The name is guaranteed to be unique by sysfs design during the whole
> device lifetime, and calling unregister_xxx() outside the lifetime brackets
> is clearly an error.
> 
> > It is quite unusual to unregister based on name.  Pointers are far more 
> > likely to be unique, and the programmer is far less likely to screw up 
> > the unregister operation.
> I understand this, I see why it looks unusual. I'll fix this if it matters.

It matters, please fix it.

> It'll be something like:
> 
> lcd_device = register_lcd_device ("foo", ...);
> ...
> unregister_lcd_device (lcd_device);

What about:
	lcd_device = alloc_lcd_device("foo", ...);
	error = register_lcd_device(lcd_device);
	...
	unregister_lcd_device(lcd_device);

thanks,

greg k-h