From: Josh Wu <josh.wu@atmel.com>
Date: Tue, 27 Aug 2013 11:28:00 +0000 (+0100)
Subject: iio: at91: fix adc_clk overflow
X-Git-Tag: v3.12-rc2~1^2^2~13
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=db10e201172f48dad29d81ee1fec96384f0eab35;p=pandora-kernel.git

iio: at91: fix adc_clk overflow

The adc_clk variable is currently defined using a 32-bits unsigned integer,
which will overflow under some very valid range of operations.

Such overflow will occur if, for example, the parent clock is set to a
20MHz frequency and the ADC startup time is larger than 215ns.

To fix this, introduce an intermediate variable holding the clock rate
in kHz.

Signed-off-by: Josh Wu <josh.wu@atmel.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
---

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