s390: vfio-ap: fix irq registration

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vfio_ap_free_aqic_resources is called in two places:
- during registration to have a "known state"
- during interrupt disable

We must not clear q->matrix_mdev in the registration phase as this will
mess up the reference counting and can lead to some warning and other
bugs.

Fixes: ec89b55e3b ("s390: ap: implement PAPQ AQIC interception in kernel")
Reviewed-by: Halil Pasic <pasic@linux.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>

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Christian Borntraeger 2019-07-05 21:02:48 +02:00 • committed by Vasily Gorbik

parent 820bace734

commit 5c4c2126fb

1 changed files with 1 additions and 2 deletions

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drivers/s390/crypto/vfio_ap_ops.c

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