From b6ac1280b6969607c5a01e316cc4ab693490c333 Mon Sep 17 00:00:00 2001
From: Joshua Scott <joshua.scott@alliedtelesis.co.nz>
Date: Fri, 22 May 2015 12:35:12 +1200
Subject: [PATCH] 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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Reading git-format-patch failed