Re: [PATCH v2 2/2] nvmem: core: Expose cells through sysfs

[Miquel Raynal <miquel.raynal@bootlin.com>]

Hi Greg,

gregkh@linuxfoundation.org wrote on Thu, 1 Jun 2023 10:03:01 +0100:

> On Thu, Jun 01, 2023 at 10:51:14AM +0200, Miquel Raynal wrote:
> > > > +	/* Without exposed cells, successfully exit after
> > > > assigning an empty attributes array */
> > > > +	if (!ncells)
> > > > +		goto unlock_mutex;  
> > > 
> > > Shouldn't this check be higher up _before_ you allocate any memory?
> > > If the attribute group list is empty, nothing should be created,
> > > right?  Or will the driver core crash?
> > 
> > As you rightfully guessed it, the core will crash if no list is
> > provided at all. I need to provide an empty list with just an empty
> > member and everything goes smoothly. 
> 
> Let's fix the core, it shouldn't crash like that :)

Perfectly fine by me, I'll give this idea a try.

Thanks,
Miquèl