USB: serial: mos7720: Fix possible null pointer dereference

Signed-off-by: Huzaifa Sidhpurwala <huzaifas@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/serial/mos7720.c b/drivers/usb/serial/mos7720.c
index 7d3bc9a3e2b6cab8b650f7814575d3bf1ee5460e..ae506f4ee29d3551fbaea40982a9dc507a64dc59 100644 (file)
--- a/drivers/usb/serial/mos7720.c
+++ b/drivers/usb/serial/mos7720.c
@@ -2052,7 +2052,7 @@ static int mos7720_startup(struct usb_serial *serial)
        struct usb_device *dev;
        int i;
        char data;
-       u16 product = le16_to_cpu(serial->dev->descriptor.idProduct);
+       u16 product;
        int ret_val;
 
        dbg("%s: Entering ..........", __func__);
@@ -2062,6 +2062,7 @@ static int mos7720_startup(struct usb_serial *serial)
                return -ENODEV;
        }
 
+       product = le16_to_cpu(serial->dev->descriptor.idProduct);
        dev = serial->dev;
 
        /*