EDID: Fix checksummingHEADmaster

Signed-off-by: Adam Jackson <ajax@redhat.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/edid.c b/edid.c
index bf8a565..443423a 100644
--- a/edid.c
+++ b/edid.c
@@ -38,13 +38,13 @@ static uint32_t edid_probe(struct mt_monitor *mon)
     if (blocks * 128 != mon->len)
         return 0;
 
-    if (!memcmp(block, header, 8))
+    if (memcmp(block, header, 8) == 0)
         return 0;
 
     if (edid_version(block) != 1)
         return 0;
 
-    for (i = 0; i < 128; i++)
+    for (i = 0; i < mon->len / 128; i++)
         if (!edid_valid_checksum(block + (i * 128)))
             return 0;