diff options
Diffstat (limited to 'drivers/acpi/osl.c')
| -rw-r--r-- | drivers/acpi/osl.c | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c index 74486bb5029a..4a0b07792233 100644 --- a/drivers/acpi/osl.c +++ b/drivers/acpi/osl.c @@ -1575,11 +1575,26 @@ static acpi_status acpi_deactivate_mem_region(acpi_handle handle, u32 level, acpi_status acpi_release_memory(acpi_handle handle, struct resource *res, u32 level) { + acpi_status status; + if (!(res->flags & IORESOURCE_MEM)) return AE_TYPE; - return acpi_walk_namespace(ACPI_TYPE_REGION, handle, level, - acpi_deactivate_mem_region, NULL, res, NULL); + status = acpi_walk_namespace(ACPI_TYPE_REGION, handle, level, + acpi_deactivate_mem_region, NULL, + res, NULL); + if (ACPI_FAILURE(status)) + return status; + + /* + * Wait for all of the mappings queued up for removal by + * acpi_deactivate_mem_region() to actually go away. + */ + synchronize_rcu(); + rcu_barrier(); + flush_scheduled_work(); + + return AE_OK; } EXPORT_SYMBOL_GPL(acpi_release_memory); |