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-rw-r--r--drivers/iommu/iommu.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index d2aa23202bb9..7f61b142263e 100644
--- a/drivers/iommu/iommu.c
+++ b/drivers/iommu/iommu.c
@@ -116,9 +116,11 @@ static void __iommu_detach_group(struct iommu_domain *domain,
116static int __init iommu_set_def_domain_type(char *str) 116static int __init iommu_set_def_domain_type(char *str)
117{ 117{
118 bool pt; 118 bool pt;
119 int ret;
119 120
120 if (!str || strtobool(str, &pt)) 121 ret = kstrtobool(str, &pt);
121 return -EINVAL; 122 if (ret)
123 return ret;
122 124
123 iommu_def_domain_type = pt ? IOMMU_DOMAIN_IDENTITY : IOMMU_DOMAIN_DMA; 125 iommu_def_domain_type = pt ? IOMMU_DOMAIN_IDENTITY : IOMMU_DOMAIN_DMA;
124 return 0; 126 return 0;