Re: [PATCH] missing NULL check in drivers/char/n_tty.c

[Dan Aloni]

On Sun, Jun 20, 2004 at 11:58:24PM -0700, Andrew Morton wrote:
> Dan Aloni <da-x@xxxxxxx> wrote:
> >
> > The rest of the kernel treats tty->driver->chars_in_buffer as a possible
> >  NULL. This patch changes normal_poll() to be consistent with the rest of
> >  the code.
> 
> It would be better to change the rest of the kernel - remove the tests.
> 
> If any driver fails to implement ->chars_in_buffer() then we get a nice
> oops which tells us that driver needs a stub handler.

Are you sure that it won't affect the logic in tty_wait_until_sent() 
drastically? It acts quite differently when ->chars_in_buffer == NULL.

-- 
Dan Aloni
da-x@xxxxxxxxxxx
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