Commit 72dcac63 authored by Joerg Roedel's avatar Joerg Roedel
Browse files

iommu: Warn once when device_group callback returns NULL 



This callback should never return NULL. Print a warning if
that happens so that we notice and can fix it.

Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
parent 8faf5e5a

drivers/iommu/iommu.c

+3 −0
Original line number Diff line number Diff line
@@ -1010,6 +1010,9 @@ struct iommu_group *iommu_group_get_for_dev(struct device *dev) 
	if (ops && ops->device_group)

		group = ops->device_group(dev);



	if (WARN_ON_ONCE(group == NULL))

		return ERR_PTR(-EINVAL);



	if (IS_ERR(group))

		return group;