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s390/vfio_ap: verify ZAPQ completion after return of response code zero

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Verification that the asynchronous ZAPQ function has completed only needs
to be done when the response code indicates the function was successfully
initiated; so, let's call the apq_reset_check function immediately after
the response code zero is returned from the ZAPQ.

Signed-off-by: Tony Krowiak <akrowiak@linux.ibm.com>
Reviewed-by: Jason J. Herne <jjherne@linux.ibm.com>
Reviewed-by: Harald Freudenberger <freude@linux.ibm.com>
Link: https://lore.kernel.org/r/20230118203111.529766-5-akrowiak@linux.ibm.com
Signed-off-by: Christian Borntraeger <borntraeger@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
This commit is contained in:
Tony Krowiak 2023-01-18 15:31:09 -05:00 committed by Heiko Carstens
parent 3ba4176810
commit 5a42b348ad
1 changed files with 3 additions and 4 deletions
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7
drivers/s390/crypto/vfio_ap_ops.c
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@ -1656,6 +1656,9 @@ retry_zapq:
switch (status.response_code) {
case AP_RESPONSE_NORMAL:
ret = 0;
/* if the reset has not completed, wait for it to take effect */
if (!status.queue_empty || status.irq_enabled)
ret = apq_reset_check(q);
break;
case AP_RESPONSE_RESET_IN_PROGRESS:
/*
@ -1685,10 +1688,6 @@ retry_zapq:
return -EIO;
}
/* wait for the reset to take effect */
if (!(status.queue_empty && !status.irq_enabled))
ret = apq_reset_check(q);
free_resources:
vfio_ap_free_aqic_resources(q);