Messages in this thread Patch in this message |  | | From | Masahiro Yamada <> | Subject | [PATCH] iommu/arm-smmu-v3: fix resource_size check | Date | Thu, 26 Dec 2019 18:50:56 +0900 |
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This is an off-by-one mistake.
resource_size() returns res->end - res->start + 1.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> ---
drivers/iommu/arm-smmu-v3.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c index d9e0d9c19b4f..b463599559d2 100644 --- a/drivers/iommu/arm-smmu-v3.c +++ b/drivers/iommu/arm-smmu-v3.c @@ -3599,7 +3599,7 @@ 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; } -- 2.17.1
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