From: Mario Limonciello <mario.limonciello@dell.com>
Date: Thu, 9 Nov 2017 17:49:09 +0000 (-0600)
Subject: platform/x86: dell-wmi-descriptor: check if memory was allocated
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=8b9528a6d9a901b9f933231505fef5630e80ce5a;p=linux.git

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

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>
---

diff --git a/drivers/platform/x86/dell-wmi-descriptor.c b/drivers/platform/x86/dell-wmi-descriptor.c
index 3204c408e261d..28ef5f37cfbf0 100644
--- a/drivers/platform/x86/dell-wmi-descriptor.c
+++ b/drivers/platform/x86/dell-wmi-descriptor.c
@@ -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;