From 7a3f09846c978e613979d89f99b633b501f202a2 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 8 Nov 2016 13:24:54 +0100 Subject: tty: rocket: fix invalid user-pointer checks Drop invalid user-pointer checks from custom ioctl handlers. A NULL-pointer can be valid in user space and copy_to_user() takes care of sanity checking. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/tty/rocket.c | 4 ---- 1 file changed, 4 deletions(-) (limited to 'drivers/tty') diff --git a/drivers/tty/rocket.c b/drivers/tty/rocket.c index b0cc47c77b40..d66c1edd9892 100644 --- a/drivers/tty/rocket.c +++ b/drivers/tty/rocket.c @@ -1189,8 +1189,6 @@ static int get_config(struct r_port *info, struct rocket_config __user *retinfo) { struct rocket_config tmp; - if (!retinfo) - return -EFAULT; memset(&tmp, 0, sizeof (tmp)); mutex_lock(&info->port.mutex); tmp.line = info->line; @@ -1255,8 +1253,6 @@ static int get_ports(struct r_port *info, struct rocket_ports __user *retports) struct rocket_ports tmp; int board; - if (!retports) - return -EFAULT; memset(&tmp, 0, sizeof (tmp)); tmp.tty_major = rocket_driver->major; -- cgit v1.2.3-58-ga151