linux-kernel - Re: [PATCH] usb/serial: Add compat

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Date:	Fri, 28 Nov 2008 17:23:00 -0800
From:	Arjan van de Ven <arjan@...radead.org>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
Cc:	Keith Packard <keithp@...thp.com>, linux-kernel@...r.kernel.org,
	Greg Kroah-Hartman <gregkh@...e.de>
Subject: Re: [PATCH] usb/serial: Add compat_ioctl pass-through

On Sat, 29 Nov 2008 01:10:57 +0000
Alan Cox <alan@...rguk.ukuu.org.uk> wrote:

> > Oh yes, it is -- serial_ioctl does:
> > 
> >         if (port->serial->type->ioctl) {
> >                 lock_kernel();
> >                 retval = port->serial->type->ioctl(tty, file, cmd,
> > arg); unlock_kernel();
> >         } else
> > 
> > I added the comment to make the difference in calling convention
> > documented in the header file at least, I didn't change the code.
> 
> Gak I thought I'd killed all of those.
> 
> Let me rephase it "It won't be next week" ;)

it's a double BKL since it's also using .ioctl not .unlocked_ioctl
(but then again we should just over time merge the two into a .ioctl
which is unlocked ;-)


-- 
Arjan van de Ven 	Intel Open Source Technology Centre
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