[4/3] iommu/exynos: Prepare for deferred probe support

Message ID 1464001287-12748-1-git-send-email-m.szyprowski@samsung.com
State New
Headers show

Commit Message

Marek Szyprowski May 23, 2016, 11:01 a.m.
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>

---
I'm sorry for the confussing patch number. This patch got lost while
rebasing, but it should belong to the "Exynos IOMMU: improve clock
management" patchset.

Best regards
Marek Szyprowski
Samsung R&D Institute Poland
---
 drivers/iommu/exynos-iommu.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

-- 
1.9.2

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Patch

diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c
index e0b834375f17..633e6d023c0d 100644
--- 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;
 }