[PATCH xenbus] GnttabQueryReference() incorrectly checks for GTF_readonly

[Paul Durrant <paul@xxxxxxx>]

From: Paul Durrant <pdurrant@xxxxxxxxxx>

GTF_readonly should be checked in the 'flags' field, not 'frame'. This patch
fixes the issue.

Reported-by: Connor Davis <connojd@xxxxxxxxxxxxxx>
Signed-off-by: Paul Durrant <pdurrant@xxxxxxxxxx>
---
 src/xenbus/gnttab.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/xenbus/gnttab.c b/src/xenbus/gnttab.c
index e590a5c..3fe52aa 100644
--- a/src/xenbus/gnttab.c
+++ b/src/xenbus/gnttab.c
@@ -587,7 +587,7 @@ GnttabQueryReference(
         *Pfn = Context->Table[Reference].frame;
 
     if (ReadOnly != NULL)
-        *ReadOnly = (Context->Table[Reference].frame & GTF_readonly) ? TRUE : 
FALSE;
+        *ReadOnly = (Context->Table[Reference].flags & GTF_readonly) ? TRUE : 
FALSE;
 
     return STATUS_SUCCESS;
 
-- 
2.17.1