[S390] cio: fix ineffective verify event

Path verification events occurring for offline devices are currently
ignored. As a result, offline devices are not removed, even though
they might no longer be accessible (for example because the last path
to the device was varied offline). Fix this by scheduling a status
evaluation for the affected subchannel when a path verification event
occurs.

Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

1 files changed, 12 insertions, 1 deletions

diff --git a/drivers/s390/cio/device_fsm.c b/drivers/s390/cio/device_fsm.c
index 3db88c52d287..b8bdb0d75426 100644
--- a/drivers/s390/cio/device_fsm.c
+++ b/drivers/s390/cio/device_fsm.c
@@ -731,6 +731,17 @@ static void ccw_device_generic_notoper(struct ccw_device *cdev,
 }
 
 /*
+ * Handle path verification event in offline state.
+ */
+static void ccw_device_offline_verify(struct ccw_device *cdev,
+                                      enum dev_event dev_event)
+{
+        struct subchannel *sch = to_subchannel(cdev->dev.parent);
+
+        css_schedule_eval(sch->schid);
+}
+
+/*
  * Handle path verification event.
  */
 static void
@@ -1149,7 +1160,7 @@ fsm_func_t *dev_jumptable[NR_DEV_STATES][NR_DEV_EVENTS] = {
                 [DEV_EVENT_NOTOPER]     = ccw_device_generic_notoper,
                 [DEV_EVENT_INTERRUPT]   = ccw_device_offline_irq,
                 [DEV_EVENT_TIMEOUT]     = ccw_device_nop,
-                [DEV_EVENT_VERIFY]      = ccw_device_nop,
+                [DEV_EVENT_VERIFY]      = ccw_device_offline_verify,
         },
         [DEV_STATE_VERIFY] = {
                 [DEV_EVENT_NOTOPER]     = ccw_device_generic_notoper,