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Message-Id: <1395640404-27958-1-git-send-email-behanw@converseincode.com> Date: Sun, 23 Mar 2014 22:53:24 -0700 From: behanw@...verseincode.com To: arnd@...db.de Cc: linux-arch@...r.kernel.org, linux-kernel@...r.kernel.org, dwmw2@...radead.org, pageexec@...email.hu, Behan Webster <behanw@...verseincode.com>, Mark Charlebois <charlebm@...il.com> Subject: [PATCH v4] LLVMLinux: Remove warning about returning an uninitialized variable From: Behan Webster <behanw@...verseincode.com> 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@...verseincode.com> Signed-off-by: Mark Charlebois <charlebm@...il.com> --- 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 d8d4c89..70bef78 100644 --- a/include/asm-generic/cmpxchg-local.h +++ b/include/asm-generic/cmpxchg-local.h @@ -4,7 +4,8 @@ #include <linux/types.h> #include <linux/irqflags.h> -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 -- 1.8.3.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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