linux-kernel - [PATCH 5.15 077/846] drm/bridge: display-connector: fix an uninitialized pointer in probe()

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Message-Id: <20220124184103.649101971@linuxfoundation.org>
Date:   Mon, 24 Jan 2022 19:33:14 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Dan Carpenter <dan.carpenter@...cle.com>,
        Sam Ravnborg <sam@...nborg.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.15 077/846] drm/bridge: display-connector: fix an uninitialized pointer in probe()

From: Dan Carpenter <dan.carpenter@...cle.com>

[ Upstream commit 189723fbe9aca18d6f7d638c59a40288030932b5 ]

The "label" pointer is used for debug output.  The code assumes that it
is either NULL or valid, but it is never set to NULL.  It is either
valid or uninitialized.

Fixes: 0c275c30176b ("drm/bridge: Add bridge driver for display connectors")
Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
Signed-off-by: Sam Ravnborg <sam@...nborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20211013080825.GE6010@kili
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/gpu/drm/bridge/display-connector.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/bridge/display-connector.c b/drivers/gpu/drm/bridge/display-connector.c
index 05eb759da6fc6..847a0dce7f1d3 100644
--- a/drivers/gpu/drm/bridge/display-connector.c
+++ b/drivers/gpu/drm/bridge/display-connector.c
@@ -107,7 +107,7 @@ static int display_connector_probe(struct platform_device *pdev)
 {
 	struct display_connector *conn;
 	unsigned int type;
-	const char *label;
+	const char *label = NULL;
 	int ret;
 
 	conn = devm_kzalloc(&pdev->dev, sizeof(*conn), GFP_KERNEL);
-- 
2.34.1