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linux/drivers/cpufreq
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Kevin Hilman 8df0a66377 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>
2012-10-08 14:57:34 -07:00
..
acpi-cpufreq.c acpi-cpufreq: Add compatibility for legacy AMD cpb sysfs knob 2012-09-09 22:05:20 +02:00
cpufreq-cpu0.c cpufreq: Add a generic cpufreq-cpu0 driver 2012-09-09 22:06:34 +02:00
cpufreq-nforce2.c cpufreq: Add support for x86 cpuinfo auto loading v4 2012-01-26 16:49:06 -08:00
cpufreq.c cpufreq: Fix sysfs deadlock with concurrent hotplug/frequency switch 2012-07-20 21:39:25 +02:00
cpufreq_conservative.c Power management updates for 3.7-rc1 2012-10-02 18:32:35 -07:00
cpufreq_ondemand.c Power management updates for 3.7-rc1 2012-10-02 18:32:35 -07:00
cpufreq_performance.c [CPUFREQ] use dynamic debug instead of custom infrastructure 2011-05-04 11:50:57 -04:00
cpufreq_powersave.c [CPUFREQ] use dynamic debug instead of custom infrastructure 2011-05-04 11:50:57 -04:00
cpufreq_stats.c Merge branch 'driver-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core 2012-01-07 12:03:30 -08:00
cpufreq_userspace.c [CPUFREQ] cpufreq:userspace: fix cpu_cur_freq updation 2012-01-06 10:10:53 -05:00
db8500-cpufreq.c ARM: ux500: core U9540 support 2012-05-02 00:25:13 +02:00
e_powersaver.c cpufreq: Add support for x86 cpuinfo auto loading v4 2012-01-26 16:49:06 -08:00
elanfreq.c cpufreq: Add support for x86 cpuinfo auto loading v4 2012-01-26 16:49:06 -08:00
exynos-cpufreq.c EXYNOS: bugfix on retrieving old_index from freqs.old 2012-07-20 11:58:34 +02:00
exynos4x12-cpufreq.c EXYNOS4X12: Add support cpufreq for EXYNOS4X12 2012-03-14 14:39:47 -04:00
exynos4210-cpufreq.c [CPUFREQ] EXYNOS4210: update the name of EXYNOS clock register 2012-02-29 22:24:38 -05:00
exynos5250-cpufreq.c [CPUFREQ] EXYNOS5250: Add support max 1.7GHz for EXYNOS5250 2012-07-19 13:20:25 +09:00
freq_table.c [CPUFREQ] use dynamic debug instead of custom infrastructure 2011-05-04 11:50:57 -04:00
gx-suspmod.c cpufreq/gx: Fix the compile error 2012-02-02 15:32:12 -08:00
Kconfig cpufreq: Add a generic cpufreq-cpu0 driver 2012-09-09 22:06:34 +02:00
Kconfig.arm cpufreq: OMAP: fix build errors: depends on ARCH_OMAP2PLUS 2012-04-13 17:57:40 -07:00
Kconfig.powerpc powerpc/cpufreq: Add cpufreq driver for Momentum Maple boards 2011-07-19 15:13:04 +10:00
Kconfig.x86 acpi-cpufreq: Add compatibility for legacy AMD cpb sysfs knob 2012-09-09 22:05:20 +02:00
longhaul.c cpufreq: Add support for x86 cpuinfo auto loading v4 2012-01-26 16:49:06 -08:00
longhaul.h sections: fix section conflicts in drivers/cpufreq 2012-09-14 21:10:46 +02:00
longrun.c cpufreq: Add support for x86 cpuinfo auto loading v4 2012-01-26 16:49:06 -08:00
Makefile cpufreq: Add a generic cpufreq-cpu0 driver 2012-09-09 22:06:34 +02:00
maple-cpufreq.c powerpc/cpufreq: Add cpufreq driver for Momentum Maple boards 2011-07-19 15:13:04 +10:00
mperf.c [CPUFREQ] Move x86 drivers to drivers/cpufreq/ 2011-05-19 18:51:07 -04:00
mperf.h [CPUFREQ] Move x86 drivers to drivers/cpufreq/ 2011-05-19 18:51:07 -04:00
omap-cpufreq.c cpufreq: OMAP: ensure valid clock rate before scaling 2012-10-08 14:57:34 -07:00
p4-clockmod.c cpufreq: Add support for x86 cpuinfo auto loading v4 2012-01-26 16:49:06 -08:00
pcc-cpufreq.c drivers/cpufreq/pcc-cpufreq.c: fix error return code 2012-08-08 20:49:25 +02:00
powernow-k6.c powernow-k6: Really enable auto-loading 2012-02-13 15:26:03 -08:00
powernow-k7.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
powernow-k7.h [CPUFREQ] Move x86 drivers to drivers/cpufreq/ 2011-05-19 18:51:07 -04:00
powernow-k8.c Power management updates for 3.7-rc1 2012-10-02 18:32:35 -07:00
powernow-k8.h cpufreq: Remove support for hardware P-state chips from powernow-k8 2012-09-09 22:05:30 +02:00
s3c64xx-cpufreq.c [CPUFREQ] s3c64xx: Fix mis-cherry pick of VDDINT 2012-02-29 22:24:38 -05:00
s3c2416-cpufreq.c cpufreq: Fix typo in cpufreq driver 2012-07-20 10:37:40 +02:00
s5pv210-cpufreq.c [CPUFREQ] s5pv210: make needlessly global symbols static 2011-07-13 18:30:00 -04:00
sc520_freq.c cpufreq: Add support for x86 cpuinfo auto loading v4 2012-01-26 16:49:06 -08:00
speedstep-centrino.c cpufreq: Add support for x86 cpuinfo auto loading v4 2012-01-26 16:49:06 -08:00
speedstep-ich.c cpufreq: Fix typo in cpufreq driver 2012-07-20 10:37:40 +02:00
speedstep-lib.c cpufreq: Add support for x86 cpuinfo auto loading v4 2012-01-26 16:49:06 -08:00
speedstep-lib.h [CPUFREQ] Move x86 drivers to drivers/cpufreq/ 2011-05-19 18:51:07 -04:00
speedstep-smi.c cpufreq: Add support for x86 cpuinfo auto loading v4 2012-01-26 16:49:06 -08:00