From: Russell King <rmk+kernel@arm.linux.org.uk>
Date: Mon, 10 Jan 2011 23:55:59 +0000 (+0000)
Subject: ARM: udelay: prevent math rounding resulting in short udelays
X-Git-Tag: v2.6.38-rc1~39^2~16
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=56949d414acd30353fdba4b64876a0a7953a7b77;p=pandora-kernel.git

ARM: udelay: prevent math rounding resulting in short udelays

We perform the microseconds to loops calculation using a number of
multiplies and shift rights.  Each shift right rounds down the
resulting value, which can result in delays shorter than requested.
Ensure that we always round up.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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