[win-pv-devel] [PATCH 04/15] EVTCHN Bind method should check that the channel is active

[Paul Durrant <pdurrant@xxxxxxxxx>]

Any method which performs ABI operations should check whether the channel is
active.

Signed-off-by: Paul Durrant <paul.durrant@xxxxxxxxxx>
---
 src/xenbus/evtchn.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/xenbus/evtchn.c b/src/xenbus/evtchn.c
index 16060aa..acbb84c 100644
--- a/src/xenbus/evtchn.c
+++ b/src/xenbus/evtchn.c
@@ -513,6 +513,9 @@ EvtchnBind(
 
     KeAcquireSpinLock(&Channel->Lock, &Irql);
 
+    if (!Channel->Active)
+        goto done;
+
     if (Channel->Cpu == Cpu)
         goto done;
 
-- 
2.1.1


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