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-rw-r--r--drivers/acpi/osl.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index 9964f70be98d..f9eeae871593 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -436,7 +436,7 @@ static void acpi_os_drop_map_ref(struct acpi_ioremap *map)
static void acpi_os_map_cleanup(struct acpi_ioremap *map)
{
if (!map->refcount) {
- synchronize_rcu();
+ synchronize_rcu_expedited();
acpi_unmap(map->phys, map->virt);
kfree(map);
}
@@ -1188,6 +1188,12 @@ EXPORT_SYMBOL(acpi_os_execute);
void acpi_os_wait_events_complete(void)
{
+ /*
+ * Make sure the GPE handler or the fixed event handler is not used
+ * on another CPU after removal.
+ */
+ if (acpi_irq_handler)
+ synchronize_hardirq(acpi_gbl_FADT.sci_interrupt);
flush_workqueue(kacpid_wq);
flush_workqueue(kacpi_notify_wq);
}