diff options
| -rw-r--r-- | drivers/gpu/drm/drm_edid.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index 1fcec5f4c3ec..3fb280837fdb 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -2217,10 +2217,13 @@ typedef void detailed_cb(struct detailed_timing *timing, void *closure); static void cea_for_each_detailed_block(u8 *ext, detailed_cb *cb, void *closure) { - int i, n = 0; + int i, n; u8 d = ext[0x02]; u8 *det_base = ext + d; + if (d < 4 || d > 127) + return; + n = (127 - d) / 18; for (i = 0; i < n; i++) cb((struct detailed_timing *)(det_base + 18 * i), closure); |