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Message-ID: <20230601112628.7d2dc77f@xps-13>
Date: Thu, 1 Jun 2023 11:26:28 +0200
From: Miquel Raynal <miquel.raynal@...tlin.com>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
Luka Perkov <luka.perkov@...tura.hr>,
Robert Marko <robert.marko@...tura.hr>,
Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 2/2] nvmem: core: Expose cells through sysfs
Hi Greg,
gregkh@...uxfoundation.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
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