From: Behan Webster <behanw@xxxxxxxxxxxxxxxxxx> Fix uninitialized return code in default case in cmpxchg-local.h This patch fixes the code to prevent an uninitialized return value that is detected when compiling with clang. The bug produces numerous warnings when compiling the Linux kernel with clang. Signed-off-by: Behan Webster <behanw@xxxxxxxxxxxxxxxxxx> Signed-off-by: Mark Charlebois <charlebm@xxxxxxxxx> --- include/asm-generic/cmpxchg-local.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/asm-generic/cmpxchg-local.h b/include/asm-generic/cmpxchg-local.h index d8d4c89..9112111 100644 --- a/include/asm-generic/cmpxchg-local.h +++ b/include/asm-generic/cmpxchg-local.h @@ -41,6 +41,7 @@ static inline unsigned long __cmpxchg_local_generic(volatile void *ptr, break; default: wrong_size_cmpxchg(ptr); + __builtin_unreachable(); } raw_local_irq_restore(flags); return prev; -- 1.8.3.2 -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
