linux-kernel - Re: [PATCH 3/9] efi: Remove redundant creation of the "efivars" platform device

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Message-ID: <Z9hZmOiVPUqfqqsY@bogus>
Date: Mon, 17 Mar 2025 17:19:20 +0000
From: Sudeep Holla <sudeep.holla@....com>
To: Ard Biesheuvel <ardb@...nel.org>
Cc: linux-kernel@...r.kernel.org, Sudeep Holla <sudeep.holla@....com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-efi@...r.kernel.org
Subject: Re: [PATCH 3/9] efi: Remove redundant creation of the "efivars"
 platform device

On Mon, Mar 17, 2025 at 06:06:24PM +0100, Ard Biesheuvel wrote:
> On Mon, 17 Mar 2025 at 11:13, Sudeep Holla <sudeep.holla@....com> wrote:
> >
> > The "efivars" platform device is created but never tracked or used,
> > as there is no driver associated with it. Since this device serves
> > no functional purpose, removing its creation without affecting any
> > functionality.
> >
> > Cc: Ard Biesheuvel <ardb@...nel.org>
> > Cc: linux-efi@...r.kernel.org
> > Signed-off-by: Sudeep Holla <sudeep.holla@....com>
> > ---
> >  drivers/firmware/efi/efi.c | 1 -
> >  1 file changed, 1 deletion(-)
> >
> > diff --git a/drivers/firmware/efi/efi.c b/drivers/firmware/efi/efi.c
> > index 7309394b8fc98cf7a3424af209b752f0251c8c89..eec173cb1f398d3b4f28b42c917e50e1728dc277 100644
> > --- a/drivers/firmware/efi/efi.c
> > +++ b/drivers/firmware/efi/efi.c
> > @@ -446,7 +446,6 @@ static int __init efisubsys_init(void)
> >                 error = efivar_ssdt_load();
> >                 if (error)
> >                         pr_err("efi: failed to load SSDT, error %d.\n", error);
> > -               platform_device_register_simple("efivars", 0, NULL, 0);
> >         }
> >
> >         BLOCKING_INIT_NOTIFIER_HEAD(&efivar_ops_nh);
> >
>
> IIRC the efi-pstore module autoloads based on this platform device

Indeed I see now, thanks. My bad grep skills didn't work well to catch
this. I will update accordingly.

-- 
Regards,
Sudeep