Commit 6d4c882c authored Jun 15, 2018 by Richard Weinberger Committed by Greg Kroah-Hartman Nov 27, 2018

um: Give start_idle_thread() a return code



[ Upstream commit 7ff1e34bbdc15acab823b1ee4240e94623d50ee8 ]

Fixes:
arch/um/os-Linux/skas/process.c:613:1: warning: control reaches end of
non-void function [-Wreturn-type]

longjmp() never returns but gcc still warns that the end of the function
can be reached.
Add a return code and debug aid to detect this impossible case.

Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Sasha Levin <sashal@kernel.org>

parent 5f427ca4

arch/um/os-Linux/skas/process.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -585,6 +585,11 @@ int start_idle_thread(void stack, jmp_buf switch_buf)
		fatal_sigsegv();
		}
		longjmp(*switch_buf, 1);

		/* unreachable */
		printk(UM_KERN_ERR "impossible long jump!");
		fatal_sigsegv();
		return 0;
		}

		void initial_thread_cb_skas(void (proc)(void ), void *arg)