netdev - Re: [PATCH 1/2] gigaset: return -ENOSYS for unimplemented functions

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Message-ID: <20090307142609.2995bb3d@infradead.org>
Date:	Sat, 7 Mar 2009 14:26:09 -0800
From:	Arjan van de Ven <arjan@...radead.org>
To:	Tilman Schmidt <tilman@...p.cc>
Cc:	davem@...emloft.net, linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org, Paul Bolle <pebolle@...cali.nl>,
	Hansjoerg Lipp <hjlipp@....de>
Subject: Re: [PATCH 1/2] gigaset: return -ENOSYS for unimplemented functions

On Sat,  7 Mar 2009 23:10:57 +0100 (CET)
Tilman Schmidt <tilman@...p.cc> wrote:

> From: Paul Bolle <pebolle@...cali.nl>
> 
> A number of functions in the usb_gigaset module will return -EINVAL if
> CONFIG_GIGASET_UNDOCREQ is not set. Make these return -ENOSYS as it's
> more specific and it might make it easier to see (from userspace) why
> these functions actually fail.
> 
> Impact: some error return codes changed

ENODEV is what would be more appropriate.

ENOSYS shuoldn't be returned from drivers, only from unimplemented
system calls!


-- 
Arjan van de Ven 	Intel Open Source Technology Centre
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