Christophe Leroy 31b0a491f3 powerpc/futex: Fix warning: 'oldval' may be used uninitialized in this function ... [ Upstream commit 38a0d0cdb4 ] We see warnings such as: kernel/futex.c: In function 'do_futex': kernel/futex.c:1676:17: warning: 'oldval' may be used uninitialized in this function [-Wmaybe-uninitialized] return oldval == cmparg; ^ kernel/futex.c:1651:6: note: 'oldval' was declared here int oldval, ret; ^ This is because arch_futex_atomic_op_inuser() only sets *oval if ret is 0 and GCC doesn't see that it will only use it when ret is 0. Anyway, the non-zero ret path is an error path that won't suffer from setting *oval, and as *oval is a local var in futex_atomic_op_inuser() it will have no impact. Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> [mpe: reword change log slightly] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/86b72f0c134367b214910b27b9a6dd3321af93bb.1565774657.git.christophe.leroy@c-s.fr Signed-off-by: Sasha Levin <sashal@kernel.org>		2019-10-07 18:55:02 +02:00
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asm	powerpc/futex: Fix warning: 'oldval' may be used uninitialized in this function	2019-10-07 18:55:02 +02:00
uapi/asm	KVM: PPC: Book3S HV: Enable migration of decrementer register	2018-04-26 11:02:04 +02:00