From mboxrd@z Thu Jan 1 00:00:00 1970 From: m.szyprowski@samsung.com (Marek Szyprowski) Date: Fri, 23 Jan 2015 16:51:23 +0100 Subject: [PATCH v5 13/18] iommu: exynos: add support for runtime_pm In-Reply-To: <1422028288-891-1-git-send-email-m.szyprowski@samsung.com> References: <1422028288-891-1-git-send-email-m.szyprowski@samsung.com> Message-ID: <1422028288-891-14-git-send-email-m.szyprowski@samsung.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 --- 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 c6cca44..f8609f4 100644 --- a/drivers/iommu/exynos-iommu.c +++ b/drivers/iommu/exynos-iommu.c @@ -695,6 +695,7 @@ static int exynos_iommu_attach_device(struct iommu_domain *domain, return -ENODEV; list_for_each_entry(data, &owner->clients, owner_node) { + pm_runtime_get_sync(data->sysmmu); ret = __sysmmu_enable(data, pagetable, domain); if (ret >= 0) { data->master = dev; @@ -736,6 +737,7 @@ static void exynos_iommu_detach_device(struct iommu_domain *domain, data->master = NULL; list_del_init(&data->domain_node); } + pm_runtime_put(data->sysmmu); found = true; } } -- 1.9.2