From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Subject: Re: [PATCH] PM / OPP: -ENOSYS is applicable only to syscalls
Date: Fri, 22 Apr 2016 14:42:31 +0200
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To: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Viresh Kumar <vireshk@kernel.org>, Nishanth Menon <nm@ti.com>, Stephen Boyd <sboyd@codeaurora.org>, linaro-kernel@lists.linaro.org, linux-pm@vger.kernel.org, arnd.bergmann@linaro.org, andrew@lunn.ch, gregory.clement@free-electrons.com, jason@lakedaemon.net, sebastian.hesselbarth@gmail.com, thomas.petazzoni@free-electrons.com, linux-kernel@vger.kernel.org

On Friday, April 22, 2016 08:46:51 AM Viresh Kumar wrote:
> Some of the routines have use -ENOSYS, which is supposed to be used only
> for syscalls. Replace that with -EINVAL.

-EINVAL specifically means "invalid argument".

What about using -ENXIO instead?