linux-kernel - Re: [PATCH 5/8] staging: vme: add functions for bridge module refcounting

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Message-ID: <20110809143509.GA10411@becoht-mvanga>
Date:	Tue, 9 Aug 2011 16:35:09 +0200
From:	Manohar Vanga <manohar.vanga@...n.ch>
To:	Martyn Welch <martyn.welch@...com>
CC:	"Emilio G. Cota" <cota@...ap.org>, <gregkh@...e.de>,
	<devel@...verdev.osuosl.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 5/8] staging: vme: add functions for bridge module
 refcounting

Hey Martyn,

> > I am not really an expert in these matters but would something like a sysfs file
> > be a cleaner approach to providing information on allocated resources within the
> > driver?
> 
> That would probably be a better idea.

Great! We'll add a sysfs file for this :)

> >     int ret = 0;
> >     ...
> >     vme_bridge_get(bridge);
> >     if (driver->probe)
> >             ret = driver->probe(vdev);
> >     if (ret)
> >         vme_bridge_put(bridge);
> >     return ret;
> 
> After looking at the PCI and RapidIO subsystems, I think this is probably the
> correct approach. I guess the only quiestion then is at which point is
> vme_bridge_put() called assuming the probe is successful. I guess at module
> unload time, though I haven't checked in the PCI and RapidIO code.

vme_bus_remove()? If it's incorrect, we can always change this later.

If we are agreed on this, let me know and I will make the changes and
resend the patches today.

> (Thank you for your patience)

(no problem)!

Thanks!

--
/manohar
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