Re: [PATCH v2 0/4] x86/boot/compressed: Enable -Wunused and remove unused variables

[Thorsten Blum <thorsten.blum@linux.dev>]

On Wed, Jun 24, 2026 at 02:02:54PM +0200, Thorsten Blum wrote:
> This series marks potentially unused variables and functions as
> __maybe_unused and removes truly unused ones. Patch 4 enables -Wunused,
> matching the W=0 kernel defaults. With WERROR=y, the warnings failed as
> follows:
> 
>   arch/x86/boot/compressed/acpi.c:25:1: error: ‘__efi_get_rsdp_addr’ defined but not used
>   arch/x86/boot/compressed/acpi.c:29:6: error: unused variable 'ret'
>   arch/x86/boot/compressed/acpi.c:57:15: error: unused variable 'nr_tables'
>   arch/x86/boot/compressed/efi.c:64:16: error: unused variable 'et'
>   arch/x86/boot/compressed/efi.c:136:6: error: unused variable 'ret'
>   arch/x86/boot/compressed/kaslr.c:600:13: error: unused variable ‘i’
> 
> Patch 2 also drops a redundant efi_get_system_table() call and uses the
> existing efi_get_conf_table() error path.
> 
> Changes in v2:
> - Fix a kernel test robot issue by marking __efi_get_rsdp_addr() as
>   __maybe_unused: https://lore.kernel.org/r/202606240416.cXegPpiJ-lkp@intel.com/
> - v1: https://lore.kernel.org/r/20260621144116.224010-6-thorsten.blum@linux.dev/
> 
> Thorsten Blum (4):
>   x86/boot/compressed: Remove unused variables in EFI helpers
>   x86/boot/compressed: Clean up EFI RSDP lookup in efi_get_rsdp_addr()
>   x86/boot/compressed: Mark process_mem_region() index __maybe_unused
>   x86/boot/compressed: Enable -Wunused
> 
>  arch/x86/boot/compressed/Makefile |  3 +++
>  arch/x86/boot/compressed/acpi.c   | 18 ++++--------------
>  arch/x86/boot/compressed/efi.c    | 17 +++++------------
>  arch/x86/boot/compressed/kaslr.c  |  3 ++-
>  4 files changed, 14 insertions(+), 27 deletions(-)
> 
> 
> base-commit: 840ef6c78e6a2f694b578ecb9063241c992aaa9e

Gentle ping.

Thanks,
Thorsten