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| author | Hans de Goede <hdegoede@redhat.com> | 2021-03-21 12:31:08 +0100 |
|---|---|---|
| committer | Hans de Goede <hdegoede@redhat.com> | 2021-03-21 17:46:51 +0100 |
| commit | ec0e8fc416f70645608c146dcf90d264b2ad6e3c (patch) | |
| tree | 03ba742e032d5550eaff4f727428e2ccf3b1774c /tools/testing/selftests/bpf/prog_tests/recursion.c | |
| parent | 3d677f12ea3a2097a16ded570623567403dea959 (diff) | |
platform/x86: thinkpad_acpi: Disable DYTC CQL mode around switching to balanced mode
Testing has shown that setting /sys/firmware/acpi/platform_profile to
"balanced" when /sys/bus/platform/devices/thinkpad_acpi/dytc_lapmode
reports 1, causes dytc_lapmode to get reset to 0 and then it becomes
stuck at 0 for aprox. 30 minutes even if the laptop is used on a lap.
Disabling CQL (when enabled) before issuing the DYTC_CMD_RESET to get
back to balanced mode and re-enabling it afterwards again, like the
code already does when switching to low-power / performance mode fixes
this.
Fixes: c3bfcd4c6762 ("platform/x86: thinkpad_acpi: Add platform profile support")
Tested-by: Mark Pearson <markpearson@lenovo.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20210321113108.7069-1-hdegoede@redhat.com
Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests/recursion.c')
0 files changed, 0 insertions, 0 deletions