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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 <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Johan Hovold 2016-11-08 13:24:54 +01:00 committed by Greg Kroah-Hartman
parent 6f8ada1292
commit 7a3f09846c
1 changed files with 0 additions and 4 deletions
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4
drivers/tty/rocket.c
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@ -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;