From: yangkai <yangkai@ubuntu-fs>
Date: Fri, 22 Jul 2011 01:45:07 +0000 (+0800)
Subject: fix bug of GIC crash
X-Git-Tag: firefly_0821_release~10094
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=2a95f8edcc694ff14aa07d256b3542063687f645;p=firefly-linux-kernel-4.4.55.git

fix bug of GIC crash
---

diff --git a/arch/arm/common/gic.c b/arch/arm/common/gic.c
index 3ff84676ace7..f352d793a944 100755
--- a/arch/arm/common/gic.c
+++ b/arch/arm/common/gic.c
@@ -87,6 +87,7 @@ static void gic_ack_irq(unsigned int irq)
 	spin_lock(&irq_controller_lock);
 	writel(mask, gic_dist_base(irq) + GIC_DIST_ENABLE_CLEAR + (gic_irq(irq) / 32) * 4);
 	writel(gic_irq(irq), gic_cpu_base(irq) + GIC_CPU_EOI);
+	dsb();
 	spin_unlock(&irq_controller_lock);
 }
 
@@ -96,6 +97,7 @@ static void gic_mask_irq(unsigned int irq)
 
 	spin_lock(&irq_controller_lock);
 	writel(mask, gic_dist_base(irq) + GIC_DIST_ENABLE_CLEAR + (gic_irq(irq) / 32) * 4);
+	dsb();
 	spin_unlock(&irq_controller_lock);
 }
 
@@ -105,6 +107,7 @@ static void gic_unmask_irq(unsigned int irq)
 
 	spin_lock(&irq_controller_lock);
 	writel(mask, gic_dist_base(irq) + GIC_DIST_ENABLE_SET + (gic_irq(irq) / 32) * 4);
+	dsb();
 	spin_unlock(&irq_controller_lock);
 }