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For the in_use() check of an updated apmask the host's aqmask was provided to the vfio function. Similar on an update of the aqmask the host's apmask was provided to the vfio in_use() function. This led to false results on the check for apmask or aqmask updates. For example with only one APQN when exactly this card is tried to be re-assigned back to the host, the in_use() check did not complain. The correct behavior is achieved with providing a full mask for aqmask when an adapter is to be checked and similar a full mask for aqmask when a domain is to be checked for usage. Signed-off-by: Harald Freudenberger <freude@linux.ibm.com> Reviewed-by: Holger Dengler <dengler@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com>