netdev - Re: [PATCH -next] qlcnic: fail when try to setup unsupported features

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Message-ID: <20100628161823.623343d5@dhcp-lab-109.englab.brq.redhat.com>
Date:	Mon, 28 Jun 2010 16:18:23 +0200
From:	Stanislaw Gruszka <sgruszka@...hat.com>
To:	Ben Hutchings <bhutchings@...arflare.com>
Cc:	Amit Salecha <amit.salecha@...gic.com>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	Amerigo Wang <amwang@...hat.com>,
	Anirban Chakraborty <anirban.chakraborty@...gic.com>
Subject: Re: [PATCH -next] qlcnic: fail when try to setup unsupported
 features

On Mon, 28 Jun 2010 14:30:40 +0100
Ben Hutchings <bhutchings@...arflare.com> wrote:

> > It would be more useful to add a supported_flags parameter to
> > ethtool_op_set_flags() so it can check the requested flags against the
> > driver/hardware capabilities.
> 
> I also just noticed that ethtool.h says set_flags() will return -EINVAL
> for unsupported values.  The current implementations variously return
> -EINVAL or -EOPNOTSUPP.

We need to unify ... , I prefer EOPNOTSUPP since this is returned now
if .set_flags == NULL. That will require to change a comment in 
ethtool.h and some drivers, I will take a look at it.

Stanislaw
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