Re: [PATCH stable] scripts/dtc: Remove unused dts_version in dtc-lexer.l

["Rob Herring (Arm)" <robh@kernel.org>]

On Mon, 20 Apr 2026 17:36:46 -0700, Nathan Chancellor wrote:
> This patch is for stable only. Commit 5a09df20872c ("scripts/dtc: Update
> to upstream version v1.7.2-69-g53373d135579") upstream applied it as
> part of a regular scripts/dtc sync, which may be unsuitable for older
> versions of stable where the warning it fixes is present.
> 
> A recent strengthening of -Wunused-but-set-variable (enabled with -Wall)
> in clang under a new subwarning, -Wunused-but-set-global, points out an
> unused static global variable in dtc-lexer.lex.c (compiled from
> dtc-lexer.l):
> 
>   scripts/dtc/dtc-lexer.lex.c:641:12: warning: variable 'dts_version' set but not used [-Wunused-but-set-global]
>     641 | static int dts_version = 1;
>         |            ^
> 
> Remove it to clear up the warning, as it is truly unused.
> 
> Fixes: 658f29a51e98 ("of/flattree: Update dtc to current mainline.")
> Signed-off-by: Nathan Chancellor <nathan@kernel.org>
> ---
> This should apply cleanly to all supported stable branches.
> ---
>  scripts/dtc/dtc-lexer.l | 3 ---
>  1 file changed, 3 deletions(-)
> 

Acked-by: Rob Herring (Arm) <robh@kernel.org>