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>
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@ -1189,8 +1189,6 @@ static int get_config(struct r_port *info, struct rocket_config __user *retinfo)
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{
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struct rocket_config tmp;
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if (!retinfo)
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return -EFAULT;
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memset(&tmp, 0, sizeof (tmp));
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mutex_lock(&info->port.mutex);
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tmp.line = info->line;
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@ -1255,8 +1253,6 @@ static int get_ports(struct r_port *info, struct rocket_ports __user *retports)
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struct rocket_ports tmp;
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int board;
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if (!retports)
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return -EFAULT;
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memset(&tmp, 0, sizeof (tmp));
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tmp.tty_major = rocket_driver->major;
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