diff options
Diffstat (limited to 'drivers/s390/crypto/ap_queue.c')
| -rw-r--r-- | drivers/s390/crypto/ap_queue.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/s390/crypto/ap_queue.c b/drivers/s390/crypto/ap_queue.c index 2be63f2554bd..ed8f813653fe 100644 --- a/drivers/s390/crypto/ap_queue.c +++ b/drivers/s390/crypto/ap_queue.c @@ -50,6 +50,8 @@ static int ap_queue_enable_irq(struct ap_queue *aq, void *ind) qirqctrl.ir = 1; qirqctrl.isc = AP_ISC; status = ap_aqic(aq->qid, qirqctrl, virt_to_phys(ind)); + if (status.async) + return -EPERM; switch (status.response_code) { case AP_RESPONSE_NORMAL: case AP_RESPONSE_OTHERWISE_CHANGED: @@ -96,6 +98,8 @@ int ap_send(ap_qid_t qid, unsigned long psmid, void *msg, size_t msglen) struct ap_queue_status status; status = __ap_send(qid, psmid, msg, msglen, 0); + if (status.async) + return -EPERM; switch (status.response_code) { case AP_RESPONSE_NORMAL: return 0; @@ -117,6 +121,8 @@ int ap_recv(ap_qid_t qid, unsigned long *psmid, void *msg, size_t msglen) if (!msg) return -EINVAL; status = ap_dqap(qid, psmid, msg, msglen, NULL, NULL, NULL); + if (status.async) + return -EPERM; switch (status.response_code) { case AP_RESPONSE_NORMAL: return 0; @@ -225,6 +231,8 @@ static enum ap_sm_wait ap_sm_read(struct ap_queue *aq) if (!aq->reply) return AP_SM_WAIT_NONE; status = ap_sm_recv(aq); + if (status.async) + return AP_SM_WAIT_NONE; switch (status.response_code) { case AP_RESPONSE_NORMAL: if (aq->queue_count > 0) { @@ -276,6 +284,8 @@ static enum ap_sm_wait ap_sm_write(struct ap_queue *aq) status = __ap_send(qid, ap_msg->psmid, ap_msg->msg, ap_msg->len, ap_msg->flags & AP_MSG_FLAG_SPECIAL); + if (status.async) + return AP_SM_WAIT_NONE; switch (status.response_code) { case AP_RESPONSE_NORMAL: aq->queue_count = max_t(int, 1, aq->queue_count + 1); @@ -338,6 +348,8 @@ static enum ap_sm_wait ap_sm_reset(struct ap_queue *aq) struct ap_queue_status status; status = ap_rapq(aq->qid, aq->rapq_fbit); + if (status.async) + return AP_SM_WAIT_NONE; switch (status.response_code) { case AP_RESPONSE_NORMAL: case AP_RESPONSE_RESET_IN_PROGRESS: |