USB: atm: Use FIELD_SIZEOF, trivial cleanup.

Signed-off-by: Thiago Farina <tfransosi@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/atm/usbatm.c b/drivers/usb/atm/usbatm.c
index 4038043..9b53e8d 100644 (file)
--- a/drivers/usb/atm/usbatm.c
+++ b/drivers/usb/atm/usbatm.c
@@ -1349,7 +1349,7 @@ static int __init usbatm_usb_init(void)
 {
        dbg("%s: driver version %s", __func__, DRIVER_VERSION);
 
-       if (sizeof(struct usbatm_control) > sizeof(((struct sk_buff *) 0)->cb)) {
+       if (sizeof(struct usbatm_control) > FIELD_SIZEOF(struct sk_buff, cb)) {
                printk(KERN_ERR "%s unusable with this kernel!\n", usbatm_driver_name);
                return -EIO;
        }