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tty: amiserial: fix invalid user-pointer check

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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@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Johan Hovold 2016-11-08 13:24:53 +01:00 committed by Greg Kroah-Hartman
parent 5c31ef91c0
commit 6f8ada1292
1 changed files with 0 additions and 2 deletions
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drivers/tty/amiserial.c
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@ -1012,8 +1012,6 @@ static int get_serial_info(struct tty_struct *tty, struct serial_state *state,
{ {
struct serial_struct tmp; struct serial_struct tmp;
if (!retinfo)
return -EFAULT;
memset(&tmp, 0, sizeof(tmp)); memset(&tmp, 0, sizeof(tmp));
tty_lock(tty); tty_lock(tty);
tmp.line = tty->index; tmp.line = tty->index;