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--- a/arch/x86/include/asm/percpu.h +++ b/arch/x86/include/asm/percpu.h @@ -76,7 +76,7 @@ extern void __bad_percpu_size(void); do { \ typedef typeof(var) T__; \ if (0) { \ - T__ tmp__; \ + T__ tmp__ __maybe_unused; \ tmp__ = (val); \ } \ switch (sizeof(var)) { \