In extcon_rtk_type_c_probe() devm_kzalloc() may return NULL but this
returned value is not checked.

Fixes: 8a590d7371f0 ("extcon: add Realtek DHC RTD SoC Type-C driver")
Signed-off-by: Charles Han <hanchunchao@inspur.com>
---
 drivers/extcon/extcon-rtk-type-c.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/extcon/extcon-rtk-type-c.c b/drivers/extcon/extcon-rtk-type-c.c
index 19a01e663733..2820c7e82481 100644
--- a/drivers/extcon/extcon-rtk-type-c.c
+++ b/drivers/extcon/extcon-rtk-type-c.c
@@ -1369,6 +1369,8 @@ static int extcon_rtk_type_c_probe(struct platform_device *pdev)
 	}
 
 	type_c->type_c_cfg = devm_kzalloc(dev, sizeof(*type_c_cfg), GFP_KERNEL);
+	if (!type_c->type_c_cfg)
+		return -ENOMEM;
 
 	memcpy(type_c->type_c_cfg, type_c_cfg, sizeof(*type_c_cfg));
 
-- 
2.31.1

> In extcon_rtk_type_c_probe() devm_kzalloc() may return NULL but this
> returned value is not checked.

Another wording suggestion:
A devm_kzalloc() call can return a null pointer on failure.
But such a return value was not checked in this function implementation.
Thus add a corresponding check so that a null pointer dereference
will be avoided.


Would a summary phrase like “Prevent null pointer dereference in extcon_rtk_type_c_probe()”
be a bit nicer?

Regards,
Markus