From: Alexandre Courbot <acourbot@nvidia.com>
Date: Tue, 22 Jul 2014 07:17:40 +0000 (+0900)
Subject: gpio: simplify gpiochip_export()
X-Git-Tag: omap-for-v3.17/fixes-against-rc2~114^2~13
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=14141a9352d007434ff61df1e16a2bcaf3119307;p=pandora-kernel.git

gpio: simplify gpiochip_export()

For some reason gpiochip_export() would invalidate all the descriptors
of a chip if exporting it to sysfs failed. This does not appear as
necessary. Remove that part of the code.

While we are at it, add a note about the non-safety of temporarily
releasing a spinlock in the middle of the loop that protects its
iterator, and explain why this is done.

Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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