RE: [PATCH v4 04/14] platform/x86: dell-wmi: increase severity of some failures

[Mario.Limonciello]

> -----Original Message-----
> From: Andy Shevchenko [mailto:andy.shevchenko@xxxxxxxxx]
> Sent: Thursday, October 5, 2017 12:21 AM
> To: Limonciello, Mario <Mario_Limonciello@xxxxxxxx>
> Cc: dvhart@xxxxxxxxxxxxx; LKML <linux-kernel@xxxxxxxxxxxxxxx>; Platform Driver
> <platform-driver-x86@xxxxxxxxxxxxxxx>; Andy Lutomirski <luto@xxxxxxxxxx>;
> quasisec@xxxxxxxxxx; Pali RohÃr <pali.rohar@xxxxxxxxx>; Rafael J. Wysocki
> <rjw@xxxxxxxxxxxxx>; mjg59@xxxxxxxxxx; Christoph Hellwig <hch@xxxxxx>;
> Greg KH <greg@xxxxxxxxx>
> Subject: Re: [PATCH v4 04/14] platform/x86: dell-wmi: increase severity of some
> failures
> 
> On Thu, Oct 5, 2017 at 1:48 AM, Mario Limonciello
> <mario.limonciello@xxxxxxxx> wrote:
> > There is a lot of error checking in place for the format of the WMI
> > descriptor buffer, but some of the potentially raised issues should
> > be considered critical failures.
> >
> > If the buffer size or header don't match, this is a good indication
> > that the buffer format changed in a way that the rest of the data
> > should not be relied upon.
> >
> > For the remaining data set vectors, continue to notate a warning
> > in undefined results, but as those are fields that the descriptor
> > intended to refer to other applications, don't fail if they're new
> > values.
> 
> > -       if (strncmp(obj->string.pointer, "DELL WMI", 8) != 0)
> > -               dev_warn(&wdev->dev, "Dell descriptor buffer has invalid signature
> (%8ph)\n",
> > +       if (strncmp(obj->string.pointer, "DELL WMI", 8) != 0) {
> > +               dev_err(&wdev->dev, "Dell descriptor buffer has invalid signature
> (%8ph)\n",
> 
> A nit: ping-pong programming detected.
> Looks like current patch 2 should go at least after this one.
> 
> 
> --

I'll re-order them, but either way both patches are touching these lines in some
way.