[PATCH] drm/bridge: ti-sn65dsi83: Handle dsi_lanes == 0 as invalid

[Marek Vasut]

Handle empty data-lanes = < >; property, which translates to
dsi_lanes = 0 as invalid.

Fixes: ceb515ba29ba6 ("drm/bridge: ti-sn65dsi83: Add TI SN65DSI83 and SN65DSI84 
driver")
Signed-off-by: Marek Vasut <ma...@denx.de>
Cc: Jonas Karlman <jo...@kwiboo.se>
Cc: Laurent Pinchart <laurent.pinch...@ideasonboard.com>
Cc: Lucas Stach <l.st...@pengutronix.de>
Cc: Marek Vasut <ma...@denx.de>
Cc: Maxime Ripard <max...@cerno.tech>
Cc: Neil Armstrong <narmstr...@baylibre.com>
Cc: Robert Foss <robert.f...@linaro.org>
Cc: Sam Ravnborg <s...@ravnborg.org>
---
 drivers/gpu/drm/bridge/ti-sn65dsi83.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/bridge/ti-sn65dsi83.c 
b/drivers/gpu/drm/bridge/ti-sn65dsi83.c
index d64d4385188dd..dc65f424e7f3c 100644
--- a/drivers/gpu/drm/bridge/ti-sn65dsi83.c
+++ b/drivers/gpu/drm/bridge/ti-sn65dsi83.c
@@ -585,7 +585,7 @@ static int sn65dsi83_parse_dt(struct sn65dsi83 *ctx, enum 
sn65dsi83_model model)
        ctx->host_node = of_graph_get_remote_port_parent(endpoint);
        of_node_put(endpoint);
 
-       if (ctx->dsi_lanes < 0 || ctx->dsi_lanes > 4) {
+       if (ctx->dsi_lanes <= 0 || ctx->dsi_lanes > 4) {
                ret = -EINVAL;
                goto err_put_node;
        }
-- 
2.35.1