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| author | Marek Szyprowski <m.szyprowski@samsung.com> | 2016-05-20 15:48:21 +0200 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2016-06-15 13:27:55 +0200 |
| commit | b54b874fbaf5e024723e50dfb035a9916d6752b4 (patch) | |
| tree | 3a43698660bc9af7dfcfbbb5e1498e9f46fa313d /drivers/iommu | |
| parent | Linux 4.7-rc3 (diff) | |
| download | linux-b54b874fbaf5e024723e50dfb035a9916d6752b4.tar.xz linux-b54b874fbaf5e024723e50dfb035a9916d6752b4.zip | |
iommu/exynos: Suppress unbinding to prevent system failure
Removal of IOMMU driver cannot be done reliably, so Exynos IOMMU driver
doesn't support this operation. It is essential for system operation, so
it makes sense to prevent unbinding by disabling bind/unbind sysfs
feature for SYSMMU controller driver to avoid kernel ops or trashing
memory caused by such operation.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
CC: stable@vger.kernel.org # v4.2+
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/exynos-iommu.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c index 5ecc86cb74c8..e27e3b7df4e7 100644 --- a/drivers/iommu/exynos-iommu.c +++ b/drivers/iommu/exynos-iommu.c @@ -709,6 +709,7 @@ static struct platform_driver exynos_sysmmu_driver __refdata = { .name = "exynos-sysmmu", .of_match_table = sysmmu_of_match, .pm = &sysmmu_pm_ops, + .suppress_bind_attrs = true, } }; |