Messages in this thread Patch in this message | | | From | Wei Yongjun <> | Subject | [PATCH -next] iommu/ipmmu-vmsa: Fix return value check in ipmmu_find_group_dma() | Date | Tue, 17 Oct 2017 12:11:22 +0000 |
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In case of error, the function iommu_group_get() returns NULL pointer not ERR_PTR(). The IS_ERR() test in the return value check should be replaced with NULL test.
Fixes: 3ae47292024f ("iommu/ipmmu-vmsa: Add new IOMMU_DOMAIN_DMA ops") Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> --- drivers/iommu/ipmmu-vmsa.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/iommu/ipmmu-vmsa.c b/drivers/iommu/ipmmu-vmsa.c index af81400..00e88a8 100644 --- a/drivers/iommu/ipmmu-vmsa.c +++ b/drivers/iommu/ipmmu-vmsa.c @@ -871,7 +871,7 @@ static struct iommu_group *ipmmu_find_group_dma(struct device *dev) sibling = ipmmu_find_sibling_device(dev); if (sibling) group = iommu_group_get(sibling); - if (!sibling || IS_ERR(group)) + if (!sibling || !group) group = generic_device_group(dev); return group;
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