linux-kernel - Re: [PATCH] efi: sysfb_efi: fix W=1 warnings when EFI is not set

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Message-ID: <CAMj1kXEzGnx8WivWuY5WqKqMxk3rYw1aR9-Gc80D=kWDyW3SZA@mail.gmail.com>
Date: Wed, 8 Jan 2025 17:38:25 +0100
From: Ard Biesheuvel <ardb@...nel.org>
To: Javier Martinez Canillas <javierm@...hat.com>
Cc: Randy Dunlap <rdunlap@...radead.org>, linux-kernel@...r.kernel.org, 
	kernel test robot <lkp@...el.com>, David Rheinsberg <david@...dahead.eu>, Hans de Goede <hdegoede@...hat.com>, 
	Peter Jones <pjones@...hat.com>, Simona Vetter <simona@...ll.ch>, linux-fbdev@...r.kernel.org, 
	linux-efi@...r.kernel.org
Subject: Re: [PATCH] efi: sysfb_efi: fix W=1 warnings when EFI is not set

On Wed, 8 Jan 2025 at 09:22, Javier Martinez Canillas
<javierm@...hat.com> wrote:
>
> Randy Dunlap <rdunlap@...radead.org> writes:
>
> Hello Randy,
>
> > A build with W=1 fails because there are code and data that are not
> > needed or used when CONFIG_EFI is not set. Move the "#ifdef CONFIG_EFI"
> > block to earlier in the source file so that the unused code/data are
> > not built.
> >
> > drivers/firmware/efi/sysfb_efi.c:345:39: warning: ‘efifb_fwnode_ops’ defined but not used [-Wunused-const-variable=]
> >   345 | static const struct fwnode_operations efifb_fwnode_ops = {
> >       |                                       ^~~~~~~~~~~~~~~~
> > drivers/firmware/efi/sysfb_efi.c:238:35: warning: ‘efifb_dmi_swap_width_height’ defined but not used [-Wunused-const-variable=]
> >   238 | static const struct dmi_system_id efifb_dmi_swap_width_height[] __initconst = {
> >       |                                   ^~~~~~~~~~~~~~~~~~~~~~~~~~~
> > drivers/firmware/efi/sysfb_efi.c:188:35: warning: ‘efifb_dmi_system_table’ defined but not used [-Wunused-const-variable=]
> >   188 | static const struct dmi_system_id efifb_dmi_system_table[] __initconst = {
> >       |                                   ^~~~~~~~~~~~~~~~~~~~~~
> >
> > Fixes: 15d27b15de96 ("efi: sysfb_efi: fix build when EFI is not set")
> > Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
> > Reported-by: kernel test robot <lkp@...el.com>
> > Closes: https://lore.kernel.org/oe-kbuild-all/202501071933.20nlmJJt-lkp@intel.com/
> > Cc: David Rheinsberg <david@...dahead.eu>
> > Cc: Hans de Goede <hdegoede@...hat.com>
> > Cc: Javier Martinez Canillas <javierm@...hat.com>
> > Cc: Peter Jones <pjones@...hat.com>
> > Cc: Simona Vetter <simona@...ll.ch>
> > Cc: linux-fbdev@...r.kernel.org
> > Cc: Ard Biesheuvel <ardb@...nel.org>
> > Cc: linux-efi@...r.kernel.org
> > ---
> >  drivers/firmware/efi/sysfb_efi.c |    2 +-
>
> Reviewed-by: Javier Martinez Canillas <javierm@...hat.com>
>

Thanks all. I'll queue this up.