From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Richard Weinberger Subject: [PATCH] um: Fix return value of start_idle_thread Date: Thu, 29 Mar 2018 22:45:59 +0200 Message-Id: <20180329204559.14113-1-richard@nod.at> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org To: user-mode-linux-devel@lists.sourceforge.net Cc: linux-kernel@vger.kernel.org, richard@nod.at, jdike@addtoit.com List-ID: While the function will never returns, gcc will warns. Add a return statement to make gcc happy. Before f44f1e7da7c8 we never noticed because gcc knows that longjmp does not return. arch/um/os-Linux/skas/process.c: In function ‘start_idle_thread’: arch/um/os-Linux/skas/process.c:613:1: warning: control reaches end of non-void function [-Wreturn-type] Fixes: f44f1e7da7c8 ("um: Avoid longjmp/setjmp symbol clashes with libpthread.a") Signed-off-by: Richard Weinberger --- arch/um/os-Linux/skas/process.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/um/os-Linux/skas/process.c b/arch/um/os-Linux/skas/process.c index c94c3bd70ccd..d41fdf686a5f 100644 --- a/arch/um/os-Linux/skas/process.c +++ b/arch/um/os-Linux/skas/process.c @@ -610,6 +610,10 @@ int start_idle_thread(void *stack, jmp_buf *switch_buf) fatal_sigsegv(); } longjmp(*switch_buf, 1); + + /* unreachable */ + fatal_sigsegv(); + return 0; } void initial_thread_cb_skas(void (*proc)(void *), void *arg) -- 2.13.6