rk3368: iommu: workaround for switch between vpu and hevc

vpu/hevc share the same ahb, when switch vpu and hevc,may cause
iommu error,to avoid this error,skip invalidate iommu tlb when iovmm_map

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

diff --git a/drivers/iommu/rockchip-iommu.c b/drivers/iommu/rockchip-iommu.c
index 8ed83e55f3f3a162a54057e6e9a644595ef04742..005e91c1271b9d7a3b4f985eaa696e9f2d004671 100644 (file)
--- a/drivers/iommu/rockchip-iommu.c
+++ b/drivers/iommu/rockchip-iommu.c
@@ -759,6 +759,9 @@ int rockchip_iommu_tlb_invalidate(struct device *dev)
        unsigned long flags;
        struct iommu_drvdata *data = dev_get_drvdata(dev->archdata.iommu);
 
+       if (strstr(data->dbgname, "vpu") || strstr(data->dbgname, "hevc"))
+                       return 0;
+
        spin_lock_irqsave(&data->data_lock, flags);
 
        if (rockchip_is_iommu_active(data)) {