Re: [PATCH 72/80] tty: fix up gigaset a bit
From: Tilman Schmidt
Date: Thu Oct 16 2008 - 11:51:36 EST
Am 13.10.2008 11:44 schrieb Alan Cox:
> From: Alan Cox <alan@xxxxxxxxxx>
> Stephen's fixes reminded me that gigaset is still rather broken so fix it up
> a bit
> Signed-off-by: Alan Cox <alan@xxxxxxxxxx>
Acked-by: Tilman Schmidt <tilman@xxxxxxx>
Thanks, Alan, for these improvements.
I'm now looking into the FIXME comments you added.
> @@ -571,6 +571,7 @@ gigaset_tty_close(struct tty_struct *tty)
> /* prevent other callers from entering ldisc methods */
> + /* FIXME: should use the tty state flags */
> tty->disc_data = NULL;
> if (!cs->hw.ser)
Do you know of an example line discipline that has got this right?
My model for this code was drivers/net/ppp_async.c but now it seems
that this was not as exemplary as I had hoped.
> @@ -680,6 +675,8 @@ gigaset_tty_ioctl(struct tty_struct *tty, struct file *file,
> * Poll on the tty.
> * Unused, always return zero.
> + *
> + * FIXME: should probably return an exception - especially on hangup
> static unsigned int
> gigaset_tty_poll(struct tty_struct *tty, struct file *file, poll_table *wait)
Looking around, I see that many LDs don't even provide a poll method.
So I'm thinking of just dropping this one. Would that be ok?
Tilman Schmidt E-Mail: tilman@xxxxxxx
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