ARM: l2x0: use -st dsb option for ordering writel_relaxed with unlock

writel_relaxed and spin_unlock are both store operations, so we only
need to enforce store ordering in the dsb.

Signed-off-by: Will Deacon <will.deacon@arm.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/arch/arm/mm/cache-l2x0.c b/arch/arm/mm/cache-l2x0.c
index d70e0aba0c9d..0c3fc276bd30 100644
--- a/arch/arm/mm/cache-l2x0.c
+++ b/arch/arm/mm/cache-l2x0.c
@@ -290,7 +290,7 @@ static void l2x0_disable(void)
         raw_spin_lock_irqsave(&l2x0_lock, flags);
         __l2x0_flush_all();
         writel_relaxed(0, l2x0_base + L2X0_CTRL);
-        dsb();
+        dsb(st);
         raw_spin_unlock_irqrestore(&l2x0_lock, flags);
 }