arm: dma-mapping: limit IOMMU mapping size
authorMurali Karicheri <m-karicheri2@ti.com>
Tue, 3 Mar 2015 17:52:14 +0000 (12:52 -0500)
committerBjorn Helgaas <bhelgaas@google.com>
Thu, 12 Mar 2015 16:43:09 +0000 (11:43 -0500)
commit22b3c181c6c324a46f71aae806d8ddbe61d25761
treecc563aa0518c429b8bd6ebcc7742fe44b3e8eca7
parentde335bb49269037d1e8906ba59f8bacba732bec6
arm: dma-mapping: limit IOMMU mapping size

arm_iommu_create_mapping() has size parameter of size_t and
arm_setup_iommu_dma_ops() can take a value higher than that
when this is called from the OF code.  So limit the size to
SIZE_MAX.

Tested-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com> (AMD Seattle)
Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Will Deacon <will.deacon@arm.com>
CC: Joerg Roedel <joro@8bytes.org>
CC: Grant Likely <grant.likely@linaro.org>
CC: Rob Herring <robh+dt@kernel.org>
CC: Russell King <linux@arm.linux.org.uk>
CC: Arnd Bergmann <arnd@arndb.de>
arch/arm/mm/dma-mapping.c