From aa93685afbefa0e31af3a0a03ff97b37ee92a90b Mon Sep 17 00:00:00 2001 From: Behan Webster Date: Tue, 20 Nov 2012 21:19:50 +0100 Subject: [PATCH] LLVMLinux: Remove warning about returning an uninitialized variable 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 Signed-off-by: Mark Charlebois Acked-by: David Howells Acked-by: Arnd Bergmann --- include/asm-generic/cmpxchg-local.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/include/asm-generic/cmpxchg-local.h b/include/asm-generic/cmpxchg-local.h index d8d4c898c1bb..70bef78912b7 100644 --- a/include/asm-generic/cmpxchg-local.h +++ b/include/asm-generic/cmpxchg-local.h @@ -4,7 +4,8 @@ #include #include -extern unsigned long wrong_size_cmpxchg(volatile void *ptr); +extern unsigned long wrong_size_cmpxchg(volatile void *ptr) + __noreturn; /* * Generic version of __cmpxchg_local (disables interrupts). Takes an unsigned -- 2.20.1