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platform/x86: dell-wmi-descriptor: check if memory was allocated

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devm_kzalloc will return NULL pointer if no memory was allocated.
This should be checked.  This problem also existed when the driver
was dell-wmi.c.

Signed-off-by: Mario Limonciello <mario.limonciello@dell.com>
Reviewed-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
This commit is contained in:
Mario Limonciello 2017-11-09 11:49:09 -06:00 committed by Darren Hart (VMware)
parent 73ed298b06
commit 8b9528a6d9
1 changed files with 5 additions and 0 deletions
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5
drivers/platform/x86/dell-wmi-descriptor.c
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@ -121,6 +121,11 @@ static int dell_wmi_descriptor_probe(struct wmi_device *wdev)
priv = devm_kzalloc(&wdev->dev, sizeof(struct descriptor_priv),
GFP_KERNEL);
if (!priv) {
ret = -ENOMEM;
goto out;
}
priv->interface_version = buffer[2];
priv->size = buffer[3];
ret = 0;