[patch -next] drm: off by one in drm_edid.c

[Dan Carpenter <error27@gmail.com>]

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

Signed-off-by: Dan Carpenter <error27@gmail.com>

diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index 7188674..46447b0 100644
--- 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,

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