From ce70ca562b8d17cd995e3a3a44ad23d97dfbb38e Mon Sep 17 00:00:00 2001 From: Marek Szyprowski Date: Tue, 19 May 2015 15:20:34 +0200 Subject: [PATCH] iommu/exynos: Add support for runtime_pm This patch fixes support for runtime power management for SYSMMU controllers, so they are enabled when master device is attached. Signed-off-by: Marek Szyprowski Tested-by: Javier Martinez Canillas Signed-off-by: Joerg Roedel --- drivers/iommu/exynos-iommu.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c index b7f679c4659c..c65826847819 100644 --- a/drivers/iommu/exynos-iommu.c +++ b/drivers/iommu/exynos-iommu.c @@ -715,6 +715,7 @@ static int exynos_iommu_attach_device(struct iommu_domain *iommu_domain, return -ENODEV; list_for_each_entry(data, &owner->controllers, owner_node) { + pm_runtime_get_sync(data->sysmmu); ret = __sysmmu_enable(data, pagetable, domain); if (ret >= 0) { data->master = dev; @@ -756,6 +757,7 @@ static void exynos_iommu_detach_device(struct iommu_domain *iommu_domain, data->master = NULL; list_del_init(&data->domain_node); } + pm_runtime_put(data->sysmmu); found = true; } } -- 2.39.2