drm/nouveau/disp: log if DP link training fails (687d8f66) · Commits · e / devices / android_kernel_teracube_2e

drivers/gpu/drm/nouveau/core/engine/disp/dport.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -308,7 +308,7 @@ nouveau_dp_train(struct nouveau_disp disp, const struct nouveau_dp_func func,
		while (link_bw > (dp->dpcd[1] 27000))
		link_bw++;

		while (link_bw[0]) {
		while ((ret = -EIO) && link_bw[0]) {
		/* find minimum required lane count at this link rate */
		dp->link_nr = dp->dpcd[2] & DPCD_RC02_MAX_LANE_COUNT;
		while ((dp->link_nr >> 1) * link_bw[0] > datarate)
		@@ -339,6 +339,8 @@ nouveau_dp_train(struct nouveau_disp disp, const struct nouveau_dp_func func,

		/* finish link training */
		dp_set_training_pattern(dp, 0);
		if (ret < 0)
		ERR("link training failed\n");

		/* execute post-train script from vbios */
		dp_link_train_fini(dp);