cmd: efidebug: simplify get_guid_text()

When we hit a matching GUID we can directly return the text. There is no
need for a check after the loop.

efi_guid_t is defined as 8 byte aligned but GUIDs in packed structures do
not follow this alignment. Do not require the argument of get_guid_text()
to be correctly aligned.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>

diff --git a/cmd/efidebug.c b/cmd/efidebug.c
index 1fff439..45ed5be 100644 (file)
--- a/cmd/efidebug.c
+++ b/cmd/efidebug.c
@@ -254,24 +254,27 @@ static const struct {
 };
 
 /**
- * get_guid_text - get string of protocol guid
- * @guid:      Protocol guid
- * Return:     String
+ * get_guid_text - get string of GUID
  *
- * Return string for display to represent the protocol.
+ * Return description of GUID.
+ *
+ * @guid:      GUID
+ * Return:     description of GUID or NULL
  */
-static const char *get_guid_text(const efi_guid_t *guid)
+static const char *get_guid_text(const void *guid)
 {
        int i;
 
-       for (i = 0; i < ARRAY_SIZE(guid_list); i++)
+       for (i = 0; i < ARRAY_SIZE(guid_list); i++) {
+               /*
+                * As guidcmp uses memcmp() we can safely accept unaligned
+                * GUIDs.
+                */
                if (!guidcmp(&guid_list[i].guid, guid))
-                       break;
+                       return guid_list[i].text;
+       }
 
-       if (i != ARRAY_SIZE(guid_list))
-               return guid_list[i].text;
-       else
-               return NULL;
+       return NULL;
 }
 
 /**