From: Claudiu Beznea <claudiu.beznea@xxxxxxxxxxxxx>
[ Upstream commit 44faada0f38fc333d392af04c343b0e23f8f5d81 ]
devm_kzalloc() returns a pointer to dynamically allocated memory.
Pointer could be NULL in case allocation fails. Check pointer validity.
Identified with coccinelle (kmerr.cocci script).
Fixes: f67213cee2b3 ("phy: tegra: xusb: Add usb-role-switch support")
Signed-off-by: Claudiu Beznea <claudiu.beznea@xxxxxxxxxxxxx>
Acked-by: Thierry Reding <treding@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20230531073950.145339-1-claudiu.beznea@xxxxxxxxxxxxx
Signed-off-by: Vinod Koul <vkoul@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/phy/tegra/xusb.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/phy/tegra/xusb.c b/drivers/phy/tegra/xusb.c
index f93be3c4a4a6e..8f11b293c48d1 100644
--- a/drivers/phy/tegra/xusb.c
+++ b/drivers/phy/tegra/xusb.c
@@ -663,6 +663,9 @@ static int tegra_xusb_setup_usb_role_switch(struct tegra_xusb_port *port)
port->dev.driver = devm_kzalloc(&port->dev,
sizeof(struct device_driver),
GFP_KERNEL);
+ if (!port->dev.driver)
+ return -ENOMEM;
+
port->dev.driver->owner = THIS_MODULE;
port->usb_role_sw = usb_role_switch_register(&port->dev,
--
2.39.2
