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

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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>
This commit is contained in:
Will Deacon 2013-06-12 09:59:59 +01:00
parent 40a5c0b415
commit 9781aa8adb
1 changed files with 1 additions and 1 deletions
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2
arch/arm/mm/cache-l2x0.c
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@ -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);
}