On 04/11/12 23:34, Marek Szyprowski wrote:
Fix registration to runtime pw and add missing resume callback.
Signed-off-by: Marek Szyprowski<m.szyprowski@xxxxxxxxxxx>
Acked-by: Kyungmin Park<kyungmin.park@xxxxxxxxxxx>
---
drivers/iommu/exynos-iommu.c | 20 ++++++++++++++++++--
1 files changed, 18 insertions(+), 2 deletions(-)
diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c
index b8daf7c..eef924d 100644
--- a/drivers/iommu/exynos-iommu.c
+++ b/drivers/iommu/exynos-iommu.c
@@ -651,8 +651,7 @@ static int exynos_sysmmu_probe(struct platform_device *pdev)
__set_fault_handler(data,&default_fault_handler);
- if (dev->parent)
- pm_runtime_enable(dev);
+ pm_runtime_enable(dev);
dev_dbg(dev, "(%s) Initialized\n", data->dbgname);
return 0;
@@ -674,11 +673,28 @@ err_alloc:
return ret;
}
+static int exynos_pm_resume(struct device *dev)
+{
+ struct sysmmu_drvdata *data;
+
+ data = dev_get_drvdata(dev);
+
+ if (is_sysmmu_active(data))
+ __exynos_sysmmu_enable(data, data->pgtable, NULL);
+
+ return 0;
+}
+
+const struct dev_pm_ops exynos_pm_ops = {
+ .resume =&exynos_pm_resume,
+};
+
static struct platform_driver exynos_sysmmu_driver = {
.probe = exynos_sysmmu_probe,
.driver = {
.owner = THIS_MODULE,
.name = "exynos-sysmmu",
+ .pm =&exynos_pm_ops,
}
};
Joerg,
This patch is needed to correct run-time pm for EXYNOS SoCs with System
MMU after KyongHo's iommu/exynos patch. So if you're ok on this, let me
apply this in samsung tree.
Thanks.
Best regards,
Kgene.
--
Kukjin Kim <kgene.kim@xxxxxxxxxxx>, Senior Engineer,
SW Solution Development Team, Samsung Electronics Co., Ltd.
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