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From: "Rafael J. Wysocki" <rjw@rjwysocki.net>
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,
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        linux-kernel@vger.kernel.org
Subject: Re: [PATCH] PM / OPP: -ENOSYS is applicable only to syscalls
Date: Fri, 22 Apr 2016 14:42:31 +0200
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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?