linux-kernel - Re: Peculiar stuff in hci_ath3k/badness in hci

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Message-ID: <4CAEE1DB.1070202@Atheros.com>
Date:	Fri, 8 Oct 2010 14:48:19 +0530
From:	Suraj Sumangala <suraj@...eros.com>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"marcel@...tmann.org" <marcel@...tmann.org>,
	"linux-bluetooth@...r.kernel.org" <linux-bluetooth@...r.kernel.org>
Subject: Re: Peculiar stuff in hci_ath3k/badness in hci_uart

Hi Alan,

On 10/8/2010 2:11 AM, Alan Cox wrote:
> Noticed this while looking at Savoy's stuff
>
>
> ath_wakeup_ar3k:
>
>         int status = tty->driver->ops->tiocmget(tty, NULL);
>
I agree, it will be a problem if the underlying driver try to access the 
"struct file". Is there any other way I can get the MCR status here 
without providing user space pointer?

>
> Fortunately I looked further and the further I looked the more fun it gets
>
> in hci_uart we have
>
>                  len = tty->ops->write(tty, skb->data, skb->len);
>
Regards
Suraj
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