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phy: tegra: xusb: check return value of devm_kzalloc()

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[ Upstream commit 44faada0f3 ]

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: f67213cee2 ("phy: tegra: xusb: Add usb-role-switch support")
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Link: https://lore.kernel.org/r/20230531073950.145339-1-claudiu.beznea@microchip.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Claudiu Beznea 2023-05-31 10:39:50 +03:00 committed by Greg Kroah-Hartman
parent ddce2002e5
commit 25cbee4f2d
1 changed files with 3 additions and 0 deletions
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3
drivers/phy/tegra/xusb.c
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@ -676,6 +676,9 @@ 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,