diff options
| author | Masahiro Yamada <yamada.masahiro@socionext.com> | 2019-12-26 18:50:56 +0900 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2020-01-10 09:49:27 +0000 |
| commit | 322a9bbb720cd273d2967a375d1887199b361528 (patch) | |
| tree | 0f02ef4cd8fa37b24bb84e47a38450872f28c51f | |
| parent | 935d43ba272e0001f8ef446a3eff15d8175cb11b (diff) | |
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: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Will Deacon <will@kernel.org>
| -rw-r--r-- | drivers/iommu/arm-smmu-v3.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c index a4ee956b8968..5c42c686cffe 100644 --- a/drivers/iommu/arm-smmu-v3.c +++ b/drivers/iommu/arm-smmu-v3.c @@ -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; } |