drm: off by one in drm_edid.c

m == num_est3_modes is one past the end of the est3_modes[].

Signed-off-by: Dan Carpenter <error27@gmail.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index 326f28e04aab73fe1a949399046c4109032e1cb8..0acb83a637276685856f26f58813ea5df1f51ffa 100644 (file)
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -1383,7 +1383,7 @@ drm_est3_modes(struct drm_connector *connector, struct detailed_timing *timing)
        for (i = 0; i < 6; i++) {
                for (j = 7; j > 0; j--) {
                        m = (i * 8) + (7 - j);
-                       if (m > num_est3_modes)
+                       if (m >= num_est3_modes)
                                break;
                        if (est[i] & (1 << j)) {
                                mode = drm_find_dmt(connector->dev,