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ACPI: EC: Simplify locking in acpi_ec_event_handler()

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Because acpi_ec_event_handler() is a work function, it always
runs in process context with interrupts enabled, so it can use
spin_lock_irq() and spin_unlock_irq() for the locking.

Make it do so and adjust white space around those calls.

No expected functional impact.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Rafael J. Wysocki 2021-11-23 19:40:50 +01:00
parent 388fb77dcf
commit a105acd7e3
1 changed files with 9 additions and 9 deletions
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18
drivers/acpi/ec.c
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@ -1217,18 +1217,18 @@ err_exit:
static void acpi_ec_event_handler(struct work_struct *work)
{
unsigned long flags;
struct acpi_ec *ec = container_of(work, struct acpi_ec, work);
ec_dbg_evt("Event started");
spin_lock_irqsave(&ec->lock, flags);
spin_lock_irq(&ec->lock);
while (ec->nr_pending_queries) {
spin_unlock_irqrestore(&ec->lock, flags);
spin_unlock_irq(&ec->lock);
acpi_ec_query(ec);
spin_lock_irqsave(&ec->lock, flags);
spin_lock_irq(&ec->lock);
ec->nr_pending_queries--;
}
@ -1241,23 +1241,23 @@ static void acpi_ec_event_handler(struct work_struct *work)
ec_event_clearing == ACPI_EC_EVT_TIMING_QUERY)
acpi_ec_complete_query(ec);
spin_unlock_irqrestore(&ec->lock, flags);
spin_unlock_irq(&ec->lock);
ec_dbg_evt("Event stopped");
if (ec_event_clearing == ACPI_EC_EVT_TIMING_EVENT && ec_guard(ec)) {
spin_lock_irqsave(&ec->lock, flags);
spin_lock_irq(&ec->lock);
/* Take care of SCI_EVT unless someone else is doing that. */
if (!ec->curr)
advance_transaction(ec, false);
spin_unlock_irqrestore(&ec->lock, flags);
spin_unlock_irq(&ec->lock);
}
spin_lock_irqsave(&ec->lock, flags);
spin_lock_irq(&ec->lock);
ec->events_in_progress--;
spin_unlock_irqrestore(&ec->lock, flags);
spin_unlock_irq(&ec->lock);
}
static void acpi_ec_handle_interrupt(struct acpi_ec *ec)