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authorRafael J. Wysocki <rjw@sisk.pl>2012-05-20 13:58:00 +0200
committerRafael J. Wysocki <rjw@sisk.pl>2012-05-29 21:20:24 +0200
commit38c92fff988d518fe80dc23d0d44d66bd7e47ddd (patch)
treec18cc469f47bf0e79f3617c59175978e60f31878 /tools/perf/scripts/python/event_analyzing_sample.py
parentACPI / PM: Fix error messages in drivers/acpi/bus.c (diff)
downloadlinux-38c92fff988d518fe80dc23d0d44d66bd7e47ddd.tar.gz
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ACPI / PM: Make __acpi_bus_get_power() cover D3cold correctly
After recent changes of the ACPI device power states definitions, if power resources are not used for the device's power management, the state returned by __acpi_bus_get_power() cannot exceed D3hot, because the return values of _PSC are 0 through 3. However, if the _PR3 method is not present for the device and _PS3 returns 3, we have to assume that the device is in D3cold, so the value returned by __acpi_bus_get_power() in that case should be 4. Similarly, acpi_power_get_inferred_state() should take the power resources for the D3hot state into account in general, so that it can return 3 if those resources are "on" or 4 (D3cold) otherwise. Fix the the above two issues and make sure that if both _PSC and _PR3 are present for the device, the power resources listed by _PR3 will be used to determine if the number 3 returned by _PSC is meant to represent D3cold or D3hot. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Diffstat (limited to 'tools/perf/scripts/python/event_analyzing_sample.py')
0 files changed, 0 insertions, 0 deletions
generated by cgit v1.2.3 (git 2.39.1) at 2026-02-02 18:16:19 +0000
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