xen/p2m/debugfs: Make type_name more obvious.

Per Ian Campbell suggestion to defend against future breakage
in case we expand the P2M values, incorporate the defines
in the string array.

Suggested-by: Ian Campbell <Ian.Campbell@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

1 files changed, 5 insertions, 2 deletions

diff --git a/arch/x86/xen/p2m.c b/arch/x86/xen/p2m.c
index 2e3bf7a0732b..795e003517e1 100644
--- a/arch/x86/xen/p2m.c
+++ b/arch/x86/xen/p2m.c
@@ -787,12 +787,15 @@ int p2m_dump_show(struct seq_file *m, void *v)
 {
         static const char * const level_name[] = { "top", "middle",
                                                 "entry", "abnormal", "error"};
-        static const char * const type_name[] = { "identity", "missing",
-                                                "pfn", "abnormal"};
 #define TYPE_IDENTITY 0
 #define TYPE_MISSING 1
 #define TYPE_PFN 2
 #define TYPE_UNKNOWN 3
+        static const char * const type_name[] = {
+                                [TYPE_IDENTITY] = "identity",
+                                [TYPE_MISSING] = "missing",
+                                [TYPE_PFN] = "pfn",
+                                [TYPE_UNKNOWN] = "abnormal"};
         unsigned long pfn, prev_pfn_type = 0, prev_pfn_level = 0;
         unsigned int uninitialized_var(prev_level);
         unsigned int uninitialized_var(prev_type);