Messages in this thread | | | Date | Fri, 19 Nov 2021 15:36:57 +0100 | From | Greg Kroah-Hartman <> | Subject | Re: Intel bluetooth regression in 5.15.3 |
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On Fri, Nov 19, 2021 at 01:43:32PM +0000, Chris Clayton wrote: > Hi, > > I built and installed 5.15.3 this morning and found that my bluetooth devices no longer work. 5.15.2 and 5.10.80 are > both OK. > > I've bisected it and landed on: > > cfc1a472a8d89c0d0bbb3600501eeeebc5ec8039 is the first bad commit > commit cfc1a472a8d89c0d0bbb3600501eeeebc5ec8039 > Author: Rafael J. Wysocki <rafael.j.wysocki@intel.com> > Date: Sat Oct 9 16:22:09 2021 +0200 > > ACPI: scan: Release PM resources blocked by unused objects > > [ Upstream commit c10383e8ddf4810b9a5c1595404c2724d925a0a6 ] > > On some systems the ACPI namespace contains device objects that are > not used in certain configurations of the system. If they start off > in the D0 power state configuration, they will stay in it until the > system reboots, because of the lack of any mechanism possibly causing > their configuration to change. If that happens, they may prevent > some power resources from being turned off or generally they may > prevent the platform from getting into the deepest low-power states > thus causing some energy to be wasted. > > Address this issue by changing the configuration of unused ACPI > device objects to the D3cold power state one after carrying out > the ACPI-based enumeration of devices. > > BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=214091 > Link: https://lore.kernel.org/linux-acpi/20211007205126.11769-1-mario.limonciello@amd.com/ > Reported-by: Mario Limonciello <mario.limonciello@amd.com> > Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> > Tested-by: Mario Limonciello <mario.limonciello@amd.com> > Signed-off-by: Sasha Levin <sashal@kernel.org> > > drivers/acpi/glue.c | 25 +++++++++++++++++++++++++ > drivers/acpi/internal.h | 1 + > drivers/acpi/scan.c | 6 ++++++ > 3 files changed, 32 insertions(+) > > 5.15.3 with that commit reverted works fine. > > Let me know if you need any additional diagnostics or patches tested but please cc me as I'm not subscribed.
Is 5.16-rc1 also a problem for you and your devices?
thanks,
greg k-h
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