mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-25 20:14:25 +08:00
22db06337f
The addition of might_sleep() to down_timeout() caused the latter to
enable interrupts unconditionally in some cases, which in turn broke
the ACPI S3 wakeup path in acpi_suspend_enter(), where down_timeout()
is called by acpi_disable_all_gpes() via acpi_ut_acquire_mutex().
Namely, if CONFIG_DEBUG_ATOMIC_SLEEP is set, might_sleep() causes
might_resched() to be used and if CONFIG_PREEMPT_VOLUNTARY is set,
this triggers __cond_resched() which may call preempt_schedule_common(),
so __schedule() gets invoked and it ends up with enabled interrupts (in
the prev == next case).
Now, enabling interrupts early in the S3 wakeup path causes the kernel
to crash.
Address this by modifying acpi_suspend_enter() to disable GPEs without
attempting to acquire the sleeping lock which is not needed in that code
path anyway.
Fixes: 99409b935c ("locking/semaphore: Add might_sleep() to down_*() family")
Reported-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: 5.15+ <stable@vger.kernel.org> # 5.15+
132 lines
3.6 KiB
C
132 lines
3.6 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 */
|
|
/******************************************************************************
|
|
*
|
|
* Name: achware.h -- hardware specific interfaces
|
|
*
|
|
* Copyright (C) 2000 - 2023, Intel Corp.
|
|
*
|
|
*****************************************************************************/
|
|
|
|
#ifndef __ACHWARE_H__
|
|
#define __ACHWARE_H__
|
|
|
|
/* Values for the _SST predefined method */
|
|
|
|
#define ACPI_SST_INDICATOR_OFF 0
|
|
#define ACPI_SST_WORKING 1
|
|
#define ACPI_SST_WAKING 2
|
|
#define ACPI_SST_SLEEPING 3
|
|
#define ACPI_SST_SLEEP_CONTEXT 4
|
|
|
|
/*
|
|
* hwacpi - high level functions
|
|
*/
|
|
acpi_status acpi_hw_set_mode(u32 mode);
|
|
|
|
u32 acpi_hw_get_mode(void);
|
|
|
|
/*
|
|
* hwregs - ACPI Register I/O
|
|
*/
|
|
acpi_status
|
|
acpi_hw_validate_register(struct acpi_generic_address *reg,
|
|
u8 max_bit_width, u64 *address);
|
|
|
|
acpi_status acpi_hw_read(u64 *value, struct acpi_generic_address *reg);
|
|
|
|
acpi_status acpi_hw_write(u64 value, struct acpi_generic_address *reg);
|
|
|
|
struct acpi_bit_register_info *acpi_hw_get_bit_register_info(u32 register_id);
|
|
|
|
acpi_status acpi_hw_write_pm1_control(u32 pm1a_control, u32 pm1b_control);
|
|
|
|
acpi_status acpi_hw_register_read(u32 register_id, u32 *return_value);
|
|
|
|
acpi_status acpi_hw_register_write(u32 register_id, u32 value);
|
|
|
|
acpi_status acpi_hw_clear_acpi_status(void);
|
|
|
|
/*
|
|
* hwsleep - sleep/wake support (Legacy sleep registers)
|
|
*/
|
|
acpi_status acpi_hw_legacy_sleep(u8 sleep_state);
|
|
|
|
acpi_status acpi_hw_legacy_wake_prep(u8 sleep_state);
|
|
|
|
acpi_status acpi_hw_legacy_wake(u8 sleep_state);
|
|
|
|
/*
|
|
* hwesleep - sleep/wake support (Extended FADT-V5 sleep registers)
|
|
*/
|
|
void acpi_hw_execute_sleep_method(char *method_name, u32 integer_argument);
|
|
|
|
acpi_status acpi_hw_extended_sleep(u8 sleep_state);
|
|
|
|
acpi_status acpi_hw_extended_wake_prep(u8 sleep_state);
|
|
|
|
acpi_status acpi_hw_extended_wake(u8 sleep_state);
|
|
|
|
/*
|
|
* hwvalid - Port I/O with validation
|
|
*/
|
|
acpi_status acpi_hw_read_port(acpi_io_address address, u32 *value, u32 width);
|
|
|
|
acpi_status acpi_hw_write_port(acpi_io_address address, u32 value, u32 width);
|
|
|
|
acpi_status acpi_hw_validate_io_block(u64 address, u32 bit_width, u32 count);
|
|
|
|
/*
|
|
* hwgpe - GPE support
|
|
*/
|
|
acpi_status acpi_hw_gpe_read(u64 *value, struct acpi_gpe_address *reg);
|
|
|
|
acpi_status acpi_hw_gpe_write(u64 value, struct acpi_gpe_address *reg);
|
|
|
|
u32 acpi_hw_get_gpe_register_bit(struct acpi_gpe_event_info *gpe_event_info);
|
|
|
|
acpi_status
|
|
acpi_hw_low_set_gpe(struct acpi_gpe_event_info *gpe_event_info, u32 action);
|
|
|
|
acpi_status
|
|
acpi_hw_disable_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
|
|
struct acpi_gpe_block_info *gpe_block, void *context);
|
|
|
|
acpi_status acpi_hw_clear_gpe(struct acpi_gpe_event_info *gpe_event_info);
|
|
|
|
acpi_status
|
|
acpi_hw_clear_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
|
|
struct acpi_gpe_block_info *gpe_block, void *context);
|
|
|
|
acpi_status
|
|
acpi_hw_get_gpe_status(struct acpi_gpe_event_info *gpe_event_info,
|
|
acpi_event_status *event_status);
|
|
|
|
acpi_status acpi_hw_enable_all_runtime_gpes(void);
|
|
|
|
acpi_status acpi_hw_enable_all_wakeup_gpes(void);
|
|
|
|
u8 acpi_hw_check_all_gpes(acpi_handle gpe_skip_device, u32 gpe_skip_number);
|
|
|
|
acpi_status
|
|
acpi_hw_enable_runtime_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
|
|
struct acpi_gpe_block_info *gpe_block,
|
|
void *context);
|
|
|
|
#ifdef ACPI_PCI_CONFIGURED
|
|
/*
|
|
* hwpci - PCI configuration support
|
|
*/
|
|
acpi_status
|
|
acpi_hw_derive_pci_id(struct acpi_pci_id *pci_id,
|
|
acpi_handle root_pci_device, acpi_handle pci_region);
|
|
#else
|
|
static inline acpi_status
|
|
acpi_hw_derive_pci_id(struct acpi_pci_id *pci_id, acpi_handle root_pci_device,
|
|
acpi_handle pci_region)
|
|
{
|
|
return AE_SUPPORT;
|
|
}
|
|
#endif
|
|
|
|
#endif /* __ACHWARE_H__ */
|