From: Devendra Naga <devendra.aaru@gmail.com>
Date: Sun, 26 May 2013 03:04:16 +0000 (-0400)
Subject: staging: btmtk_usb: check for a valid io_buf pointer
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=cff2ae2185394eba19d100596848c7e8e598c652;p=deliverable%2Flinux.git

staging: btmtk_usb: check for a valid io_buf pointer

assigned to retval of kmalloc but not checked whether the allocation failed or not,
fail the registering if allocation fail

Signed-off-by: Devendra Naga <devendra.aaru@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/staging/btmtk_usb/btmtk_usb.c b/drivers/staging/btmtk_usb/btmtk_usb.c
index 85bafacbb2fd..ab57a4b97e69 100644
--- a/drivers/staging/btmtk_usb/btmtk_usb.c
+++ b/drivers/staging/btmtk_usb/btmtk_usb.c
@@ -1597,6 +1597,11 @@ static int btmtk_usb_probe(struct usb_interface *intf,
 	}
 
 	data->io_buf = kmalloc(256, GFP_ATOMIC);
+	if (!data->io_buf) {
+		hci_free_dev(hdev);
+		kfree(data);
+		return -ENOMEM;
+	}
 
 	btmtk_usb_switch_iobase(data, WLAN);