From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751519AbaCVPss (ORCPT ); Sat, 22 Mar 2014 11:48:48 -0400 Received: from mail-pa0-f43.google.com ([209.85.220.43]:46157 "EHLO mail-pa0-f43.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750921AbaCVPsm (ORCPT ); Sat, 22 Mar 2014 11:48:42 -0400 From: behanw@converseincode.com To: arnd@arndb.de Cc: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, dwmw2@infradead.org, pageexec@freemail.hu, Behan Webster , Mark Charlebois Subject: [PATCH v2] LLVMLinux: Remove warning about returning an uninitialized variable Date: Sat, 22 Mar 2014 08:48:19 -0700 Message-Id: <1395503299-15203-1-git-send-email-behanw@converseincode.com> X-Mailer: git-send-email 1.8.3.2 In-Reply-To: <201403221101.16961.arnd@arndb.de> References: <201403221101.16961.arnd@arndb.de> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Behan Webster 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 --- 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