From 9a16e83fe9ad16fc8312a46d429e3d62849b189e Mon Sep 17 00:00:00 2001
From: Simon <xxm@rock-chips.com>
Date: Fri, 17 Apr 2015 14:27:47 +0800
Subject: [PATCH] rk3368: iommu: delete region list if map failed

Signed-off-by: Simon <xxm@rock-chips.com>
---
 drivers/iommu/rockchip-iovmm.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/iommu/rockchip-iovmm.c b/drivers/iommu/rockchip-iovmm.c
index c83573edaa41..d1100d6fcd24 100755
--- a/drivers/iommu/rockchip-iovmm.c
+++ b/drivers/iommu/rockchip-iovmm.c
@@ -156,10 +156,13 @@ dma_addr_t rockchip_iovmm_map(struct device *dev,
 	}
 	dev_dbg(dev->archdata.iommu, "IOVMM: Allocated VM region @ %p/%#X bytes.\n",
 	&region->start, region->size);
-	
+
 	return region->start;
 
 err_map_map:
+	spin_lock(&vmm->lock);
+	list_del(&region->node);
+	spin_unlock(&vmm->lock);
 	iommu_unmap(vmm->domain, start, mapped_size);
 	gen_pool_free(vmm->vmm_pool, start, size);
 err_map_noiomem:
-- 
2.34.1