diff options
| author | Johan Hovold <johan@kernel.org> | 2016-11-08 15:24:54 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-11-10 16:41:25 +0300 |
| commit | 7a3f09846c978e613979d89f99b633b501f202a2 (patch) | |
| tree | 35f5f17e109ef5a97ed008bf269127f2175f47d1 /drivers/tty/rocket.c | |
| parent | 6f8ada1292904c8299daa019634b3cddcf2a31c3 (diff) | |
| download | linux-7a3f09846c978e613979d89f99b633b501f202a2.tar.xz | |
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>
Diffstat (limited to 'drivers/tty/rocket.c')
| -rw-r--r-- | drivers/tty/rocket.c | 4 |
1 files changed, 0 insertions, 4 deletions
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; |