linux-kernel - Re: [PATCH] Fix broken compilation of Cris serial driver

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Date:	Wed, 8 Apr 2009 16:51:22 +0400
From:	Alexey Dobriyan <adobriyan@...il.com>
To:	Jesper Nilsson <Jesper.Nilsson@...s.com>
Cc:	Claudio Scordino <claudio@...dence.eu.com>,
	Mikael Starvik <mikael.starvik@...s.com>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Hinko Kocevar <hinko.kocevar@...rtapot.si>,
	Janez Cufer <janez.cufer@...rtapot.si>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	dev-etrax <dev-etrax@...s.com>
Subject: Re: [PATCH] Fix broken compilation of Cris serial driver

On Wed, Apr 08, 2009 at 12:57:01PM +0200, Jesper Nilsson wrote:
> On Wed, Apr 08, 2009 at 12:07:16PM +0200, Claudio Scordino wrote:
> >     compilation of cris serial driver on 2.6.30-rc1 is broken since 
> > commit number 0f043a81ebe84be3576667f04fdda481609e3816 removed the 
> > read_proc field from the tty_driver structure.
> > 
> > The patch in attachment may fix the problem. Please check it very 
> > carefully: I don't have hardware to make any test.

> > -	.read_proc = rs_read_proc,
> >  	.tiocmget = rs_tiocmget,
> >  	.tiocmset = rs_tiocmset
> >  };
> > @@ -4490,6 +4490,7 @@ rs_init(void)
> >  	if (tty_register_driver(driver))
> >  		panic("Couldn't register serial driver\n");
> >  	/* do some initializing for the separate ports */
> > +	driver->proc_entry->read_proc = rs_read_proc;
> 
> Is this the recommended way to convert proc handling?

No.

> I find no other serial driver that does it this way...

->read_proc effectively went away.

> I was looking at using the proc_fops instead, but that is a
> much larger change.
> 
> I will try to test your patch and if it works I'll push it
> through the CRIS tree.

It shouldn't work, ->read_proc won't even be called.
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