From: Richard Leitner <dev@g0hl1n.net>
Date: Mon, 8 Dec 2014 15:28:10 +0000 (+0100)
Subject: misc: ioc4: simplify wave period measurement in clock_calibrate
X-Git-Tag: fixes-v4.0-rc1~101^2~78
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=769105aa740dc0428f2585ec99c457d30aaab364;p=pandora-kernel.git

misc: ioc4: simplify wave period measurement in clock_calibrate

The loop for measuring the square wave periods over some cycles is
refactored to be more easily readable. This includes avoiding a
"by-hand-implemented" for loop with a "real" one and adding some
comments.

Furthermore the following compiler warning is avoided by this patch:
drivers/misc/ioc4.c: In function ‘ioc4_probe’:
drivers/misc/ioc4.c:194:16: warning: ‘start’ may be used uninitialized
in this function [-Wmaybe-uninitialized]
  period = (end - start) /
                ^
drivers/misc/ioc4.c:148:11: note: ‘start’ was declared here
  uint64_t start, end, period;
           ^

Signed-off-by: Richard Leitner <dev@g0hl1n.net>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

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