lkml.org 
[lkml]   [2019]   [Dec]   [26]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH] iommu/arm-smmu-v3: fix resource_size check
Date
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
\
 
 \ /
  Last update: 2019-12-26 10:53    [W:0.033 / U:0.204 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site