s390/zcryt: Handle AP configuration changes

Detect external AP bus configuration changes and request
an AP device rescan.

Signed-off-by: Holger Dengler <hd@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

1 files changed, 13 insertions, 0 deletions

diff --git a/drivers/s390/crypto/zcrypt_error.h b/drivers/s390/crypto/zcrypt_error.h
index 0965e2626d18..0079b6617211 100644
--- a/drivers/s390/crypto/zcrypt_error.h
+++ b/drivers/s390/crypto/zcrypt_error.h
@@ -26,6 +26,8 @@
 #ifndef _ZCRYPT_ERROR_H_
 #define _ZCRYPT_ERROR_H_
 
+#include <linux/atomic.h>
+#include "zcrypt_debug.h"
 #include "zcrypt_api.h"
 
 /**
@@ -108,16 +110,27 @@ static inline int convert_error(struct zcrypt_device *zdev,
                  * and then repeat the request.
                  */
                 WARN_ON(1);
+                atomic_set(&zcrypt_rescan_req, 1);
                 zdev->online = 0;
+                ZCRYPT_DBF_DEV(DBF_ERR, zdev, "dev%04xo%drc%d",
+                               zdev->ap_dev->qid,
+                               zdev->online, ehdr->reply_code);
                 return -EAGAIN;
         case REP82_ERROR_TRANSPORT_FAIL:
         case REP82_ERROR_MACHINE_FAILURE:
         //   REP88_ERROR_MODULE_FAILURE         // '10' CEX2A
                 /* If a card fails disable it and repeat the request. */
+                atomic_set(&zcrypt_rescan_req, 1);
                 zdev->online = 0;
+                ZCRYPT_DBF_DEV(DBF_ERR, zdev, "dev%04xo%drc%d",
+                               zdev->ap_dev->qid,
+                               zdev->online, ehdr->reply_code);
                 return -EAGAIN;
         default:
                 zdev->online = 0;
+                ZCRYPT_DBF_DEV(DBF_ERR, zdev, "dev%04xo%drc%d",
+                               zdev->ap_dev->qid,
+                               zdev->online, ehdr->reply_code);
                 return -EAGAIN; /* repeat the request on a different device. */
         }
 }