From: Richard Genoud <richard.genoud@gmail.com>
Date: Thu, 21 Mar 2013 11:21:47 +0000 (+0100)
Subject: pinmux: forbid mux_usecount to be set at UINT_MAX
X-Git-Tag: v3.9-rc5~35^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=740924a267e85de09707ea158bbf594b4d8bae01;p=pandora-kernel.git

pinmux: forbid mux_usecount to be set at UINT_MAX

If pin_free is called on a pin already freed, mux_usecount is set to
UINT_MAX which is really a bad idea.

This will issue a warning, so that we can correct the code responsible
for the double free.

Signed-off-by: Richard Genoud <richard.genoud@gmail.com>
Reviewed-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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