Merge tag 's390-4.20-3' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull s390 updates from Martin Schwidefsky:

 - Add two missing kfree calls on error paths in the vfio-ccw code

 - Make sure that all data structures of a mediated vfio-ccw device are
   initialized before registering it

 - Fix a sparse warning in vfio-ccw

 - A followup patch for the pgtable_bytes accounting, the page table
   downgrade for compat processes missed a mm_dec_nr_pmds()

 - Reject sampling requests in the PMU init function of the CPU
   measurement counter facility

 - With the vfio AP driver an AP queue needs to be reset on every device
   probe as the alternative driver could have modified the device state

* tag 's390-4.20-3' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390/mm: correct pgtable_bytes on page table downgrade
  s390/zcrypt: reinit ap queue state machine during device probe
  s390/cpum_cf: Reject request for sampling in event initialization
  s390/cio: Fix cleanup when unsupported IDA format is used
  s390/cio: Fix cleanup of pfn_array alloc failure
  vfio: ccw: Register mediated device once all structures are initialized
  s390/cio: make vfio_ccw_io_region static

1 files changed, 15 insertions, 0 deletions

diff --git a/drivers/s390/crypto/ap_queue.c b/drivers/s390/crypto/ap_queue.c
index 66f7334bcb03..0aa4b3ccc948 100644
--- a/drivers/s390/crypto/ap_queue.c
+++ b/drivers/s390/crypto/ap_queue.c
@@ -718,5 +718,20 @@ void ap_queue_remove(struct ap_queue *aq)
 {
 	ap_flush_queue(aq);
 	del_timer_sync(&aq->timeout);
+
+	/* reset with zero, also clears irq registration */
+	spin_lock_bh(&aq->lock);
+	ap_zapq(aq->qid);
+	aq->state = AP_STATE_BORKED;
+	spin_unlock_bh(&aq->lock);
 }
 EXPORT_SYMBOL(ap_queue_remove);
+
+void ap_queue_reinit_state(struct ap_queue *aq)
+{
+	spin_lock_bh(&aq->lock);
+	aq->state = AP_STATE_RESET_START;
+	ap_wait(ap_sm_event(aq, AP_EVENT_POLL));
+	spin_unlock_bh(&aq->lock);
+}
+EXPORT_SYMBOL(ap_queue_reinit_state);