iommu/exynos: Prepare for deferred probe support

Register iommu_ops at the end of successful probe instead of doing that
unconditionally. This makes Exynos IOMMU driver ready for deferred probe
caused by not-yet-available clocks.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>

diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c
index e0b8343..633e6d0 100644 (file)
--- a/drivers/iommu/exynos-iommu.c
+++ b/drivers/iommu/exynos-iommu.c
@@ -581,6 +581,8 @@ static void sysmmu_tlb_invalidate_entry(struct sysmmu_drvdata *data,
        spin_unlock_irqrestore(&data->lock, flags);
 }
 
+static struct iommu_ops exynos_iommu_ops;
+
 static int __init exynos_sysmmu_probe(struct platform_device *pdev)
 {
        int irq, ret;
@@ -654,6 +656,8 @@ static int __init exynos_sysmmu_probe(struct platform_device *pdev)
 
        pm_runtime_enable(dev);
 
+       of_iommu_set_ops(dev->of_node, &exynos_iommu_ops);
+
        return 0;
 }
 
@@ -1347,7 +1351,6 @@ static int __init exynos_iommu_of_setup(struct device_node *np)
        if (!dma_dev)
                dma_dev = &pdev->dev;
 
-       of_iommu_set_ops(np, &exynos_iommu_ops);
        return 0;
 }