This is a note to let you know that I've just added the patch titled
iommu/arm-smmu-v3: Fix a NULL vs IS_ERR() check
to the 6.11-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
iommu-arm-smmu-v3-fix-a-null-vs-is_err-check.patch
and it can be found in the queue-6.11 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit f6e22d9fd69ec1c9ba4373a7d1a6430d27db12c1
Author: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Date: Thu Aug 15 14:25:00 2024 +0300
iommu/arm-smmu-v3: Fix a NULL vs IS_ERR() check
[ Upstream commit af048ec9c05178206e845a88bfd3cb2884a43da7 ]
The arm_smmu_domain_alloc() function returns error pointers on error. It
doesn't return NULL. Update the error checking to match.
Fixes: 52acd7d8a413 ("iommu/arm-smmu-v3: Add support for domain_alloc_user fn")
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Reviewed-by: Shameer Kolothum <shameerali.kolothum.thodi@xxxxxxxxxx>
Reviewed-by: Jason Gunthorpe <jgg@xxxxxxxxxx>
Link: https://lore.kernel.org/r/9208cd0d-8105-40df-93e9-bdcdf0d55eec@stanley.mountain
Signed-off-by: Will Deacon <will@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
index ed2b106e02dd1..f490385c13605 100644
--- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
+++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
@@ -3062,8 +3062,8 @@ arm_smmu_domain_alloc_user(struct device *dev, u32 flags,
return ERR_PTR(-EOPNOTSUPP);
smmu_domain = arm_smmu_domain_alloc();
- if (!smmu_domain)
- return ERR_PTR(-ENOMEM);
+ if (IS_ERR(smmu_domain))
+ return ERR_CAST(smmu_domain);
smmu_domain->domain.type = IOMMU_DOMAIN_UNMANAGED;
smmu_domain->domain.ops = arm_smmu_ops.default_domain_ops;
