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Commit fcfc638c authored by Alexey Y. Starikovskiy's avatar Alexey Y. Starikovskiy Committed by Len Brown
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ACPI: Remove deferred execution from global lock acquire wakeup path 

On acquiring the ACPI global lock, if there were sleepers on the lock,
we used to use acpi_os_execute() to defer a thread which would signal
sleepers.  Now just signal the semaphore directly.

http://bugzilla.kernel.org/show_bug.cgi?id=5534#c159



Signed-off-by: default avatarLen Brown <len.brown@intel.com>
parent b4bd8c66

drivers/acpi/events/evmisc.c

+1 −13
Original line number Original line Diff line number Diff line
@@ -342,20 +342,8 @@ static u32 acpi_ev_global_lock_handler(void *context) 
	if (acquired) {

	if (acquired) {





		/* Got the lock, now wake all threads waiting for it */

		/* Got the lock, now wake all threads waiting for it */



		acpi_gbl_global_lock_acquired = TRUE;

		acpi_gbl_global_lock_acquired = TRUE;



		acpi_ev_global_lock_thread(context);

		/* Run the Global Lock thread which will signal all waiting threads */



		status =

		    acpi_os_execute(OSL_GLOBAL_LOCK_HANDLER,

				    acpi_ev_global_lock_thread, context);

		if (ACPI_FAILURE(status)) {

			ACPI_EXCEPTION((AE_INFO, status,

					"Could not queue Global Lock thread"));



			return (ACPI_INTERRUPT_NOT_HANDLED);

		}

	}

	}





	return (ACPI_INTERRUPT_HANDLED);

	return (ACPI_INTERRUPT_HANDLED);