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Message-ID: <20090307163522.1165494b@infradead.org> Date: Sat, 7 Mar 2009 16:35:22 -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 Sun, 08 Mar 2009 01:22:28 +0100 Tilman Schmidt <tilman@...p.cc> wrote: > Am 07.03.2009 23:26 schrieb Arjan van de Ven: > > 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. > > Not at all. ENODEV means "no such device", which would be quite wrong. > The device does exist and is in all probability working perfectly > fine. It just doesn't implement that particular ioctl. then -ENOTTY is the right answer -- Arjan van de Ven Intel Open Source Technology Centre For development, discussion and tips for power savings, visit http://www.lesswatts.org -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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