From: Tomasz Figa <tomasz.figa@gmail.com>
Date: Sat, 11 Jan 2014 21:39:01 +0000 (+0100)
Subject: mmc: sdhci-s3c: Use shifts to divide by powers of two
X-Git-Tag: v3.15-rc1~42^2~44
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8880a4a526340335403696f30daf4e05a413f3bd;p=pandora-kernel.git

mmc: sdhci-s3c: Use shifts to divide by powers of two

Current implementation of sdhci_s3c_consider_clock() is highly
inefficient due to multiple integer divisions by variable performed in a
loop. Since only divisors that are powers of two are considered, this
patch replaces them with respective shifts, removing all the integer
divisions.

Signed-off-by: Tomasz Figa <tomasz.figa@gmail.com>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Tested-by: Jaehoon Chung <jh80.chung@samsung.com>
Acked-by; Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Chris Ball <chris@printf.net>
---

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