UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

ACPI fix for 6.4-rc8 

Fix a kernel crash during early resume from ACPI S3 that has been
 present since the 5.15 cycle when might_sleep() was added to
 down_timeout(), which in some configurations of the kernel caused
 an implicit preemption point to trigger at a wrong time.
 -----BEGIN PGP SIGNATURE-----
 
 iQJGBAABCAAwFiEE4fcc61cGeeHD/fCwgsRv/nhiVHEFAmSRzgISHHJqd0Byand5
 c29ja2kubmV0AAoJEILEb/54YlRx7xAP/ifRMO55I2+K4oGO36Iol07TJASzSU6Q
 mVk5/rw4LbcS/WnONO3T77hkBTCQ/uILkMImV/OwPQgOA+n6Fg5fKQMdGG8tamQb
 FAJUE0TBDFLSGLl3YjoqYz3euA1ldZvivAukPSfom8G1Xoqcyrx6PfHqMKzL5JQt
 fLb+8WOPkxtMt6fJ/iWFewkXHMU2/ZqiOpvaCOG3+SrBtf6S+EKnZmiQSxLaZ3o1
 LK2Dx5lIWVT+aR6EgrF+3Vvrex0vry7MOI/7da8g3ou9newklAgtGAgUH1sqMDfp
 dlQv0gksdCnNeBn5mtbcb3ZGsedaoy77WNrdzWod2psySCo0mgE+F8c7iEFBccZW
 ss9a4Ev7fCtaghrxv/SSvn3CHFdM7wBvRnfrBJhCHTcr93hu8HiSS5GZKEDuRQye
 wYSCgxHA7YTIetHcb0FZxnJgYHKihqD3qoaKlXcbd2cQXvGJGIGRcWw7COggNpw8
 D3TR6/kJiePzEwuTV7EVlsGS26UjSBA73eXsMTxn4CyzJbO5oveLsMmkzMjVathg
 s/pJIBXnU4i3nTdLjTezioAODhfIAkA7i/c61ZO3Y+bNgve5EoyT5MuFOsejBX3L
 SJus945AFKNFLzuGVxsvlG+dc1P2fApo10gf5jE5gG9Xo1HLyiHfYK+1Lu5+dKW0
 5LLGa6rd/NOs
 =FyLX
 -----END PGP SIGNATURE-----

Merge tag 'acpi-6.4-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI fix from Rafael Wysocki:
 "Fix a kernel crash during early resume from ACPI S3 that has been
  present since the 5.15 cycle when might_sleep() was added to
  down_timeout(), which in some configurations of the kernel caused an
  implicit preemption point to trigger at a wrong time"

* tag 'acpi-6.4-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI: sleep: Avoid breaking S3 wakeup due to might_sleep()
This commit is contained in:
Linus Torvalds 2023-06-20 15:45:34 -07:00
parent c74e2ac238 22db06337f
commit e660abd551
3 changed files with 13 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/acpi/acpica/achware.h
View File

@ -101,8 +101,6 @@ acpi_status
acpi_hw_get_gpe_status(struct acpi_gpe_event_info *gpe_event_info,
acpi_event_status *event_status);
acpi_status acpi_hw_disable_all_gpes(void);
acpi_status acpi_hw_enable_all_runtime_gpes(void);
acpi_status acpi_hw_enable_all_wakeup_gpes(void);

16
drivers/acpi/sleep.c
View File

@ -636,11 +636,19 @@ static int acpi_suspend_enter(suspend_state_t pm_state)
}
/*
* Disable and clear GPE status before interrupt is enabled. Some GPEs
* (like wakeup GPE) haven't handler, this can avoid such GPE misfire.
* acpi_leave_sleep_state will reenable specific GPEs later
* Disable all GPE and clear their status bits before interrupts are
* enabled. Some GPEs (like wakeup GPEs) have no handlers and this can
* prevent them from producing spurious interrups.
*
* acpi_leave_sleep_state() will reenable specific GPEs later.
*
* Because this code runs on one CPU with disabled interrupts (all of
* the other CPUs are offline at this time), it need not acquire any
* sleeping locks which may trigger an implicit preemption point even
* if there is no contention, so avoid doing that by using a low-level
* library routine here.
*/
acpi_disable_all_gpes();
acpi_hw_disable_all_gpes();
/* Allow EC transactions to happen. */
acpi_ec_unblock_transactions();

1
include/acpi/acpixf.h
View File

@ -761,6 +761,7 @@ ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status
acpi_event_status
*event_status))
ACPI_HW_DEPENDENT_RETURN_UINT32(u32 acpi_dispatch_gpe(acpi_handle gpe_device, u32 gpe_number))
ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status acpi_hw_disable_all_gpes(void))
ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status acpi_disable_all_gpes(void))
ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status acpi_enable_all_runtime_gpes(void))
ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status acpi_enable_all_wakeup_gpes(void))