Re: [PATCH] xen/debugfs: Check debugfs initialization before using it

From: Greg KH
Date: Sun Dec 08 2013 - 08:59:56 EST


On Sun, Dec 08, 2013 at 07:31:02PM +0800, ethan.zhao wrote:
> Should check debugfs initialization with debugfs_initialized() before using it,
> Because if it isn't initialized, the return value of fake debugfs_create_dir() etc
> functions would be ERR_PTR(-ENODEV), checking with NULL will not work.

So? It should "just work" without this check, right? What happens if
your patch isn't applied and debugfs isn't enabled?

greg k-h

> Signed-off-by: ethan.zhao <ethan.kernel@xxxxxxxxx>

Please put your "real" name here, not one with a '.' in it.

thanks,

greg k-h
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/