From: Wei Yongjun <weiyongjun1@huawei.com>
Date: Wed, 28 Mar 2018 12:52:10 +0000
Subject: drm/tegra: dc: Using NULL instead of plain integer
Git-commit: ef1b204a7024de1a813a7bf7d68c45fac9b9d1a3
Patch-mainline: v4.16
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

Fixes the following sparse warnings:

drivers/gpu/drm/tegra/dc.c:2181:69: warning:
  Using plain integer as NULL pointer

Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/tegra/dc.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/gpu/drm/tegra/dc.c
+++ b/drivers/gpu/drm/tegra/dc.c
@@ -2160,7 +2160,7 @@ static int tegra_dc_couple(struct tegra_
 		struct device_link *link;
 		struct device *partner;
 
-		partner = driver_find_device(dc->dev->driver, NULL, 0,
+		partner = driver_find_device(dc->dev->driver, NULL, NULL,
 					     tegra_dc_match_by_pipe);
 		if (!partner)
 			return -EPROBE_DEFER;