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authorXiaoguang Chen <chenxg@marvell.com>2013-11-07 03:28:50 +0100
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2013-11-07 19:36:19 +0100
commit3baa976ae644f76f5cdb5be0fb26754c3bfb32cb (patch)
tree5c571eb6bfb164a128c18050f310189275061159 /arch/cris
parentintel_pstate: skip the driver if ACPI has power mgmt option (diff)
downloadlinux-3baa976ae644f76f5cdb5be0fb26754c3bfb32cb.tar.xz
linux-3baa976ae644f76f5cdb5be0fb26754c3bfb32cb.zip
cpufreq: conservative: fix requested_freq reduction issue
When decreasing frequency, requested_freq may be less than freq_target, So requested_freq minus freq_target may be negative, But reqested_freq's unit is unsigned int, then the negative result will be one larger interger which may be even higher than requested_freq. This patch is to fix such issue. when result becomes negative, set requested_freq as the min value of policy. Signed-off-by: Xiaoguang Chen <chenxg@marvell.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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