Re: [PATCH 1/5] iommu: Return -EMEDIUMTYPE for incompatible domain and device/group

From: Baolu Lu
Date: Mon Jun 06 2022 - 23:23:55 EST


On 2022/6/6 14:19, Nicolin Chen wrote:
+/**
+ * iommu_attach_group - Attach an IOMMU group to an IOMMU domain
+ * @domain: IOMMU domain to attach
+ * @dev: IOMMU group that will be attached

Nit: @group: ...

+ *
+ * Returns 0 on success and error code on failure
+ *
+ * Specifically, -EMEDIUMTYPE is returned if the domain and the group are
+ * incompatible in some way. This indicates that a caller should try another
+ * existing IOMMU domain or allocate a new one.
+ */
int iommu_attach_group(struct iommu_domain *domain, struct iommu_group *group)
{
int ret;

Best regards,
baolu