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ACPI fix for 4.18-rc5 

Address a regression in ACPICA that ceased to clear the status of
 GPEs and fixed events before entering the ACPI S5 (off) system
 state during the 4.17 cycle which caused some systems to power up
 immediately after they had been turned off.
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Merge tag 'acpi-4.18-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI fix from Rafael Wysocki:
 "Address a regression in ACPICA that ceased to clear the status of GPEs
  and fixed events before entering the ACPI S5 (off) system state during
  the 4.17 cycle which caused some systems to power up immediately after
  they had been turned off"

* tag 'acpi-4.18-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPICA: Clear status of all events when entering S5
This commit is contained in:
Linus Torvalds 2018-07-11 09:58:16 -07:00
parent 1e09177aca fa85015c0d
commit 5d58093285
1 changed files with 11 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
drivers/acpi/acpica/hwsleep.c
View File

@ -51,16 +51,23 @@ acpi_status acpi_hw_legacy_sleep(u8 sleep_state)
return_ACPI_STATUS(status);
}
/*
* 1) Disable all GPEs
* 2) Enable all wakeup GPEs
*/
/* Disable all GPEs */
status = acpi_hw_disable_all_gpes();
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/*
* If the target sleep state is S5, clear all GPEs and fixed events too
*/
if (sleep_state == ACPI_STATE_S5) {
status = acpi_hw_clear_acpi_status();
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
}
acpi_gbl_system_awake_and_running = FALSE;
/* Enable all wakeup GPEs */
status = acpi_hw_enable_all_wakeup_gpes();
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);