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From:   Claudiu Beznea <claudiu.beznea@microchip.com>
To:     <jckuo@nvidia.com>, <vkoul@kernel.org>, <kishon@kernel.org>,
        <thierry.reding@gmail.com>, <jonathanh@nvidia.com>,
        <nkristam@nvidia.com>
CC:     <linux-phy@lists.infradead.org>, <linux-tegra@vger.kernel.org>,
        <linux-kernel@vger.kernel.org>,
        Claudiu Beznea <claudiu.beznea@microchip.com>
Subject: [PATCH] phy: tegra: xusb: check return value of devm_kzalloc()
Date:   Wed, 31 May 2023 10:39:50 +0300
Message-ID: <20230531073950.145339-1-claudiu.beznea@microchip.com>
MIME-Version: 1.0
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Precedence: bulk

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@microchip.com>
---

Hi,

This has been addressed using kmerr.cocci script proposed for update
at [1].

Thank you,
Claudiu Beznea

[1] https://lore.kernel.org/all/20230530074044.1603426-1-claudiu.beznea@microchip.com/

 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 ec335668563d..fe72bc74e7bc 100644
--- a/drivers/phy/tegra/xusb.c
+++ b/drivers/phy/tegra/xusb.c
@@ -675,6 +675,9 @@ 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,
-- 
2.34.1