Subject: [PATCH] iommu/exynos: Suppress unbinding to prevent system failure

From: [email-masked] (Krzysztof Kozlowski)
Date: Fri, 20 May 2016 16:02:36 +0200

On 05/20/2016 03:48 PM, Marek Szyprowski wrote:
> 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 <[email-masked]>
> CC: stable at vger.kernel.org  # v4.2+
> ---
>  drivers/iommu/exynos-iommu.c | 1 +
>  1 file changed, 1 insertion(+)

Reviewed-by: Krzysztof Kozlowski <[email-masked]>

Best regards,
Krzysztof