[PATCH -next] drm/tegra: dc: Using NULL instead of plain integer

[Wei Yongjun]

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 at huawei.com>
---
 drivers/gpu/drm/tegra/dc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c
index 616c963..910125c 100644
--- a/drivers/gpu/drm/tegra/dc.c
+++ b/drivers/gpu/drm/tegra/dc.c
@@ -2178,7 +2178,7 @@ static int tegra_dc_couple(struct tegra_dc *dc)
 		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;