diff options
Diffstat (limited to 'tools/ddcprobe/vbe.c')
| -rw-r--r-- | tools/ddcprobe/vbe.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/tools/ddcprobe/vbe.c b/tools/ddcprobe/vbe.c index bee57c5dc..7a5633c7e 100644 --- a/tools/ddcprobe/vbe.c +++ b/tools/ddcprobe/vbe.c @@ -224,7 +224,7 @@ struct vbe_edid1_info *vbe_get_edid_info() return ret; #endif #if KERNEL_BOOT_INFO - int edid_fd; + int i, invalid, edid_fd; struct vbe_edid1_info *ret = NULL; ret = malloc(sizeof(struct vbe_edid1_info)); @@ -239,6 +239,13 @@ struct vbe_edid1_info *vbe_get_edid_info() close(edid_fd); + /* Check that kernel could actually get something useful. */ + invalid = 1; + for (i = 0; invalid && i < 8; i++) + invalid = invalid && (ret->header[i] == EDID_INVALID); + if (invalid) + return NULL; + return ret; #endif return NULL; |