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Commit 72dcac63 authored by Joerg Roedel's avatar Joerg Roedel
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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
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+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;