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
[off-list ref] wrote:

Randy Dunlap [off-list ref] writes:

Hello Randy,

quoted

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@infradead.org>
Reported-by: kernel test robot <redacted>
Closes: https://lore.kernel.org/oe-kbuild-all/202501071933.20nlmJJt-lkp@intel.com/ (local)
Cc: David Rheinsberg <david@readahead.eu>
Cc: Hans de Goede <redacted>
Cc: Javier Martinez Canillas <javierm@redhat.com>
Cc: Peter Jones <pjones@redhat.com>
Cc: Simona Vetter <simona@ffwll.ch>
Cc: linux-fbdev@vger.kernel.org
Cc: Ard Biesheuvel <ardb@kernel.org>
Cc: linux-efi@vger.kernel.org
---
 drivers/firmware/efi/sysfb_efi.c |    2 +-

Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>

Thanks all. I'll queue this up.