[PATCH 5.3 002/166] drm/mcde: Fix uninitialized variable

[Greg Kroah-Hartman]

From: Linus Walleij <linus.walleij@xxxxxxxxxx>

[ Upstream commit ca5be902a87ddccc88144f2dea21b5f0814391ef ]

We need to handle the case when of_drm_find_bridge() returns
NULL.

Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Acked-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20190618115245.13915-1-linus.walleij@xxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/gpu/drm/mcde/mcde_drv.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/mcde/mcde_drv.c b/drivers/gpu/drm/mcde/mcde_drv.c
index baf63fb6850a4..a810568c76df7 100644
--- a/drivers/gpu/drm/mcde/mcde_drv.c
+++ b/drivers/gpu/drm/mcde/mcde_drv.c
@@ -319,7 +319,7 @@ static int mcde_probe(struct platform_device *pdev)
 	struct device *dev = &pdev->dev;
 	struct drm_device *drm;
 	struct mcde *mcde;
-	struct component_match *match;
+	struct component_match *match = NULL;
 	struct resource *res;
 	u32 pid;
 	u32 val;
@@ -485,6 +485,10 @@ static int mcde_probe(struct platform_device *pdev)
 		}
 		put_device(p);
 	}
+	if (!match) {
+		dev_err(dev, "no matching components\n");
+		return -ENODEV;
+	}
 	if (IS_ERR(match)) {
 		dev_err(dev, "could not create component match\n");
 		ret = PTR_ERR(match);
-- 
2.20.1