Messages in this thread Patch in this message | | | From | "Rafael J. Wysocki" <> | Subject | [PATCH v1 1/3] ACPI: OSL: Use spin locks without disabling interrupts | Date | Fri, 15 Dec 2023 12:25:15 +0100 |
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From: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
After commit 7a36b901a6eb ("ACPI: OSL: Use a threaded interrupt handler for SCI") any ACPICA code never runs in a hardirq handler, so it need not dissable interrupts on the local CPU when acquiring a spin lock.
Make it use spin locks without disabling interrupts.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> --- drivers/acpi/osl.c | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-)
Index: linux-pm/drivers/acpi/osl.c =================================================================== --- linux-pm.orig/drivers/acpi/osl.c +++ linux-pm/drivers/acpi/osl.c @@ -1515,20 +1515,18 @@ void acpi_os_delete_lock(acpi_spinlock h acpi_cpu_flags acpi_os_acquire_lock(acpi_spinlock lockp) __acquires(lockp) { - acpi_cpu_flags flags; - - spin_lock_irqsave(lockp, flags); - return flags; + spin_lock(lockp); + return 0; } /* * Release a spinlock. See above. */ -void acpi_os_release_lock(acpi_spinlock lockp, acpi_cpu_flags flags) +void acpi_os_release_lock(acpi_spinlock lockp, acpi_cpu_flags not_used) __releases(lockp) { - spin_unlock_irqrestore(lockp, flags); + spin_unlock(lockp); } #ifndef ACPI_USE_LOCAL_CACHE
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