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(parent: a7c4903) | patch
sh: fix smp_store_mb for !SMP
authorMichael S. Tsirkin <mst@redhat.com>
Sun, 27 Dec 2015 13:04:42 +0000 (15:04 +0200)
committerMichael S. Tsirkin <mst@redhat.com>
Tue, 26 Jan 2016 08:18:29 +0000 (10:18 +0200)
commitfb9b050ce9695cf2769a850d94aa2ab39c8c3cd5
tree1ce0cd003c4c6d8cb5d42130e47fa7b9c078a6eatree | snapshot
parenta7c490333df3cff5086ddf19a0837529304fa097commit | diff
sh: fix smp_store_mb for !SMP

sh variant of smp_store_mb() calls xchg() on !SMP which is stronger than
implied by both the name and the documentation.

commit 90a3ccb0be538a914e6a5c51ae919762261563ad ("sh: define __smp_xxx,
fix smp_store_mb for !SMP") was supposed to fix it but
left the bug in place.

Drop smp_store_mb, so that code in asm-generic/barrier.h
will define it correctly depending on CONFIG_SMP.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
arch/sh/include/asm/barrier.h diff | blob | history
ep93xx device tree rework repo: git://git.maquefel.me/linux.git