diff options
Diffstat (limited to 'drivers/iommu/iommu-debug.c')
| -rw-r--r-- | drivers/iommu/iommu-debug.c | 29 |
1 files changed, 21 insertions, 8 deletions
diff --git a/drivers/iommu/iommu-debug.c b/drivers/iommu/iommu-debug.c index f6f135c4354f..8438581ba171 100644 --- a/drivers/iommu/iommu-debug.c +++ b/drivers/iommu/iommu-debug.c @@ -195,25 +195,38 @@ static const struct file_operations iommu_debug_attachment_reg_write_fops = { static int iommu_debug_attach_add_debugfs( struct iommu_debug_attachment *attach) { - uuid_le uuid; - char *attach_name; + const char *attach_name; struct device *dev = attach->dev; struct iommu_domain *domain = attach->domain; + int is_dynamic; - uuid_le_gen(&uuid); - attach_name = kasprintf(GFP_KERNEL, "%s-%pUl", dev_name(dev), uuid.b); - if (!attach_name) - return -ENOMEM; + if (iommu_domain_get_attr(domain, DOMAIN_ATTR_DYNAMIC, &is_dynamic)) + is_dynamic = 0; + + if (is_dynamic) { + uuid_le uuid; + + uuid_le_gen(&uuid); + attach_name = kasprintf(GFP_KERNEL, "%s-%pUl", dev_name(dev), + uuid.b); + if (!attach_name) + return -ENOMEM; + } else { + attach_name = dev_name(dev); + } attach->dentry = debugfs_create_dir(attach_name, debugfs_attachments_dir); if (!attach->dentry) { pr_err("Couldn't create iommu/attachments/%s debugfs directory for domain 0x%p\n", attach_name, domain); - kfree(attach_name); + if (is_dynamic) + kfree(attach_name); return -EIO; } - kfree(attach_name); + + if (is_dynamic) + kfree(attach_name); if (!debugfs_create_file( "info", S_IRUSR, attach->dentry, attach, |