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 <[email protected]>
---
 drivers/tty/amiserial.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/tty/amiserial.c b/drivers/tty/amiserial.c
index 208f573495dc..dfbb974927f2 100644
--- a/drivers/tty/amiserial.c
+++ b/drivers/tty/amiserial.c
@@ -1012,8 +1012,6 @@ static int get_serial_info(struct tty_struct *tty, struct 
serial_state *state,
 {
        struct serial_struct tmp;
    
-       if (!retinfo)
-               return -EFAULT;
        memset(&tmp, 0, sizeof(tmp));
        tty_lock(tty);
        tmp.line = tty->index;
-- 
2.7.3

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