From: ljf <ljf@rock-chips.com>
Date: Fri, 7 Nov 2014 07:15:50 +0000 (+0800)
Subject: add protect mutex when activate iommu device. coresponse to iommu
X-Git-Tag: firefly_0821_release~4488
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=7d9d350eac5045436c5d9da71073dda155235f79;p=firefly-linux-kernel-4.4.55.git

add protect mutex when activate iommu device. coresponse to iommu
modify.

Signed-off-by: ljf <ljf@rock-chips.com>
---

diff --git a/arch/arm/mach-rockchip/vcodec_service.c b/arch/arm/mach-rockchip/vcodec_service.c
index 1ecf9c77249d..246db4f9524c 100755
--- a/arch/arm/mach-rockchip/vcodec_service.c
+++ b/arch/arm/mach-rockchip/vcodec_service.c
@@ -755,8 +755,11 @@ static void vpu_service_power_on(struct vpu_service_info *pservice)
 	wake_lock(&pservice->wake_lock);
 
 #if defined(CONFIG_VCODEC_MMU)
-	if (pservice->mmu_dev)
-		rockchip_iovmm_activate(pservice->dev);
+    if (pservice->mmu_dev) {
+        vcodec_enter_mode(pservice->dev_id);
+        rockchip_iovmm_activate(pservice->dev);
+        vcodec_exit_mode();
+    }
 #endif    
 }