From mboxrd@z Thu Jan 1 00:00:00 1970 From: m.szyprowski@samsung.com (Marek Szyprowski) Date: Tue, 16 Sep 2014 13:54:40 +0200 Subject: [PATCH v2 13/18] iommu: exynos: add support for runtime_pm In-Reply-To: <1410868485-4143-1-git-send-email-m.szyprowski@samsung.com> References: <1410868485-4143-1-git-send-email-m.szyprowski@samsung.com> Message-ID: <1410868485-4143-14-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 cf36cdecf335..5a6d3d0af61e 100644 --- a/drivers/iommu/exynos-iommu.c +++ b/drivers/iommu/exynos-iommu.c @@ -696,6 +696,7 @@ 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; @@ -737,6 +738,7 @@ 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