From: k.kozlowski@samsung.com (Krzysztof Kozlowski) Date: Fri, 20 May 2016 16:02:36 +0200 Subject: [PATCH] iommu/exynos: Suppress unbinding to prevent system failure In-Reply-To: <1463752114-23653-1-git-send-email-m.szyprowski@samsung.com> References: <1463752114-23653-1-git-send-email-m.szyprowski@samsung.com> Message-ID: <573F18FC.9000506@samsung.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 > CC: stable at vger.kernel.org # v4.2+ > --- > drivers/iommu/exynos-iommu.c | 1 + > 1 file changed, 1 insertion(+) Reviewed-by: Krzysztof Kozlowski Best regards, Krzysztof