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List: linaro-mm-sig
Subject: [Linaro-mm-sig] [PATCH v2 03/18] drm: exynos: detach from default dma-mapping domain on init
From: Marek Szyprowski <m.szyprowski () samsung ! com>
Date: 2014-09-16 11:54:30
Message-ID: 1410868485-4143-4-git-send-email-m.szyprowski () samsung ! com
[Download RAW message or body]
This patch adds code, which detach sub-device nodes from default iommu
domain if such has been configured.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
---
drivers/gpu/drm/exynos/exynos_drm_iommu.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/exynos/exynos_drm_iommu.c b/drivers/gpu/drm/exynos/exynos_drm_iommu.c
index b32b291f88ff..323601a52a25 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_iommu.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_iommu.c
@@ -100,6 +100,9 @@ int drm_iommu_attach_device(struct drm_device *drm_dev,
dma_set_max_seg_size(subdrv_dev, 0xffffffffu);
+ if (subdrv_dev->archdata.mapping)
+ arm_iommu_detach_device(subdrv_dev);
+
ret = arm_iommu_attach_device(subdrv_dev, dev->archdata.mapping);
if (ret < 0) {
DRM_DEBUG_KMS("failed iommu attach.\n");
--
1.9.2
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