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irqchip/gic-v3: Add missing barrier to 32bit version of gic_read_iar()

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Commit 1a1ebd5 ("irqchip/gic-v3: Make sure read from ICC_IAR1_EL1 is
visible on redestributor") fixed the missing barrier on arm64, but
forgot to update the 32bit counterpart, which has the same requirements.
Let's fix it.

Fixes: 1a1ebd5 ("irqchip/gic-v3: Make sure read from ICC_IAR1_EL1 is visible on redestributor")
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
This commit is contained in:
Marc Zyngier 2016-02-18 19:15:45 +00:00
parent 2eca0d6cee
commit 8f318526a2
1 changed files with 1 additions and 0 deletions
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arch/arm/include/asm/arch_gicv3.h
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@ -117,6 +117,7 @@ static inline u32 gic_read_iar(void)
u32 irqstat;
asm volatile("mrc " __stringify(ICC_IAR1) : "=r" (irqstat));
dsb(sy);
return irqstat;
}