From: Joshua Scott <joshua.scott@alliedtelesis.co.nz>
Date: Fri, 22 May 2015 00:35:12 +0000 (+1200)
Subject: gpio: Prevent an integer overflow in the pca953x driver
X-Git-Tag: omap-for-v4.2/fixes-rc1^2~162^2~16
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b6ac1280b6969607c5a01e316cc4ab693490c333;p=pandora-kernel.git

gpio: Prevent an integer overflow in the pca953x driver

Interrupts were missed if an 8-bit integer overflow occurred. This was
observed when bank0,pin7 and bank1,pin7 changed simultaniously.

As the 8-bit totals were only checked against zero, replace them with
booleans. Name the booleans so that their purpose is clear.

Signed-off-by: Joshua Scott <joshua.scott@alliedtelesis.co.nz>
Reviewed-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---

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