Commit 322a9bbb authored by Masahiro Yamada's avatar Masahiro Yamada Committed by Will Deacon
Browse files

iommu/arm-smmu-v3: Fix resource_size check 



This is an off-by-one mistake.

resource_size() returns res->end - res->start + 1.

Reviewed-by: default avatarRobin Murphy <robin.murphy@arm.com>
Signed-off-by: default avatarMasahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: default avatarWill Deacon <will@kernel.org>
parent 935d43ba

drivers/iommu/arm-smmu-v3.c

+1 −1
Original line number Diff line number Diff line
@@ -3632,7 +3632,7 @@ static int arm_smmu_device_probe(struct platform_device *pdev) 


	/* Base address */

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);

	if (resource_size(res) + 1 < arm_smmu_resource_size(smmu)) {

	if (resource_size(res) < arm_smmu_resource_size(smmu)) {

		dev_err(dev, "MMIO region too small (%pr)\n", res);

		return -EINVAL;

	}

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