From 8f318526a292c5e7cebb82f3f766b83c22343293 Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Thu, 18 Feb 2016 19:15:45 +0000 Subject: [PATCH] irqchip/gic-v3: Add missing barrier to 32bit version of gic_read_iar() 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 --- arch/arm/include/asm/arch_gicv3.h | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/include/asm/arch_gicv3.h b/arch/arm/include/asm/arch_gicv3.h index 7da5503c0591..e08d15184056 100644 --- a/arch/arm/include/asm/arch_gicv3.h +++ b/arch/arm/include/asm/arch_gicv3.h @@ -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; } -- 2.20.1