tree d5ab3e7434c916f97b2e22fee6dd48c7cc9c416c
parent 7c4e9ced424be4d36df6a3e3825763e97ee97607
author Nicolas Pitre <nicolas.pitre@linaro.org> 1361201773 +0100
committer Russell King <rmk+kernel@arm.linux.org.uk> 1361453136 +0000

ARM: 7653/2: do not scale loops_per_jiffy when using a constant delay clock

When udelay() is implemented using an architected timer, it is wrong
to scale loops_per_jiffy when changing the CPU clock frequency since
the timer clock remains constant.

The lpj should probably become an implementation detail relevant to
the CPU loop based delay routine only and more confined to it. In the
mean time this is the minimal fix needed to have expected delays with
the timer based implementation when cpufreq is also in use.

Reported-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Nicolas Pitre <nico@linaro.org>
Tested-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Liviu Dudau <Liviu.Dudau@arm.com>
Cc: stable@vger.kernel.org
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>