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| author | Marek Szyprowski <m.szyprowski@samsung.com> | 2015-05-19 15:20:32 +0200 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2015-05-29 10:49:43 +0200 |
| commit | 06801db0d3bba2b4e585130981fadf71bbce4159 (patch) | |
| tree | caf45baa2e7184da495ad5a51b50316c13e9523f /drivers/iommu/exynos-iommu.c | |
| parent | iommu/exynos: Document internal structures (diff) | |
| download | linux-06801db0d3bba2b4e585130981fadf71bbce4159.tar.xz linux-06801db0d3bba2b4e585130981fadf71bbce4159.zip | |
iommu/exynos: Add/remove callbacks should fail if no iommu is available
Return fail if given master device passed to add_device/remove_device
callbacks doesn't has associated any sysmmu controller.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Tested-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu/exynos-iommu.c')
| -rw-r--r-- | drivers/iommu/exynos-iommu.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c index f6ed59cad90b..99ed39c89e0b 100644 --- a/drivers/iommu/exynos-iommu.c +++ b/drivers/iommu/exynos-iommu.c @@ -1082,6 +1082,9 @@ static int exynos_iommu_add_device(struct device *dev) struct iommu_group *group; int ret; + if (!has_sysmmu(dev)) + return -ENODEV; + group = iommu_group_get(dev); if (!group) { @@ -1100,6 +1103,9 @@ static int exynos_iommu_add_device(struct device *dev) static void exynos_iommu_remove_device(struct device *dev) { + if (!has_sysmmu(dev)) + return; + iommu_group_remove_device(dev); } |