Re: [PATCH] virtio_console: correct error message on failure ofdebugfs_create_dir

[Greg Kroah-Hartman]

On Mon, Dec 24, 2012 at 11:55:46AM +0000, Arnd Bergmann wrote:
> On Friday 21 December 2012, Amit Shah wrote:
> > On (Thu) 20 Dec 2012 [14:11:21], Sasha Levin wrote:
> > > debugfs_create_dir() returns NULL if it fails, there's little point in
> > > calling PTR_ERR on it.
> >
> > debugfs_create_dir() does return an error value if debugfs is not
> > enabled.
> > 
> > This check for !pdrvdata.debugfs_dir should infact use
> > IS_ERR_OR_NULL().  Care to submit a patch for that?
> 
> How about we fix the stub instead to return NULL when debugfs is disabled?

No, please read debugfs.h for why I decided to not do this (i.e. we try
to learn from our mistakes...)

thanks,

greg k-h
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