Drop invalid user-pointer check from TIOCGSERIAL handler. A NULL-pointer can be valid in user space and copy_to_user() takes care of sanity checking. Signed-off-by: Johan Hovold <johan@xxxxxxxxxx> --- drivers/usb/class/cdc-acm.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index c2da3811915a..b501abe4b76d 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -877,9 +877,6 @@ static int get_serial_info(struct acm *acm, struct serial_struct __user *info) { struct serial_struct tmp; - if (!info) - return -EINVAL; - memset(&tmp, 0, sizeof(tmp)); tmp.flags = ASYNC_LOW_LATENCY; tmp.xmit_fifo_size = acm->writesize; -- 2.7.3 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html