Joerg Roedel 72dcac6334 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: Joerg Roedel <jroedel@suse.de>

2017-06-28 13:29:46 +02:00

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