Re: [patch] tty: handle NULL parameters in free_tty_struct()

[Alan Cox]

On Fri, 20 Jul 2012 10:06:34 +0300
Dan Carpenter <dan.carpenter@xxxxxxxxxx> wrote:

> We sometimes pass NULL pointers to free_tty_struct().  One example where
> it can happen is in the error handling code in pty_common_install().
> 
> Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>

Acked-by: Alan Cox <alan@xxxxxxxxxxxxxxx>

We probably shouldn't be passing NULLs there but making
free_tty_struct(NULL) a no-op matches the kfree and other behaviours and
is robust.
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