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| /openbmc/linux/drivers/cpufreq/ |
| H A D | omap-cpufreq.c | diff 8df0a6637767474989022b93230a8615f11fb53b Tue Oct 02 17:39:03 CDT 2012 Kevin Hilman <khilman@ti.com> cpufreq: OMAP: ensure valid clock rate before scaling
Ensure the clock rate that will be used is a valid one before
attempting to scale the voltage. Currently the driver assumes it has
a valid frequency from the OPP table, but boards using different
system oscillators might not have exact matches with the OPP table,
and result in a failing call to clk_set_rate().
This is particularily bad because the voltage may be scaled even
though the frequency is not. This will obviously lead to some
unpredictable behavior, especially if the frequency is high and
the voltage is dropped.
Thanks to Joni Lapilainen for reporting crashes seen on 3430/n900.
Reported-by: Joni Lapilainen <joni.lapilainen@gmail.com>
Acked-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Kevin Hilman <khilman@ti.com>
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