1 files changed, 48 insertions, 0 deletions

diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index a28f5b8972b4..0f6f3bcbc8eb 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -76,6 +76,54 @@ static acpi_osd_handler acpi_irq_handler;
 static void *acpi_irq_context;
 static struct workqueue_struct *kacpid_wq;
 
+static void __init acpi_request_region (struct acpi_generic_address *addr,
+        unsigned int length, char *desc)
+{
+        struct resource *res;
+
+        if (!addr->address || !length)
+                return;
+
+        if (addr->space_id == ACPI_ADR_SPACE_SYSTEM_IO)
+                res = request_region(addr->address, length, desc);
+        else if (addr->space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY)
+                res = request_mem_region(addr->address, length, desc);
+}
+
+static int __init acpi_reserve_resources(void)
+{
+        acpi_request_region(&acpi_gbl_FADT.xpm1a_event_block, acpi_gbl_FADT.pm1_event_length,
+                "ACPI PM1a_EVT_BLK");
+
+        acpi_request_region(&acpi_gbl_FADT.xpm1b_event_block, acpi_gbl_FADT.pm1_event_length,
+                "ACPI PM1b_EVT_BLK");
+
+        acpi_request_region(&acpi_gbl_FADT.xpm1a_control_block, acpi_gbl_FADT.pm1_control_length,
+                "ACPI PM1a_CNT_BLK");
+
+        acpi_request_region(&acpi_gbl_FADT.xpm1b_control_block, acpi_gbl_FADT.pm1_control_length,
+                "ACPI PM1b_CNT_BLK");
+
+        if (acpi_gbl_FADT.pm_timer_length == 4)
+                acpi_request_region(&acpi_gbl_FADT.xpm_timer_block, 4, "ACPI PM_TMR");
+
+        acpi_request_region(&acpi_gbl_FADT.xpm2_control_block, acpi_gbl_FADT.pm2_control_length,
+                "ACPI PM2_CNT_BLK");
+
+        /* Length of GPE blocks must be a non-negative multiple of 2 */
+
+        if (!(acpi_gbl_FADT.gpe0_block_length & 0x1))
+                acpi_request_region(&acpi_gbl_FADT.xgpe0_block,
+                               acpi_gbl_FADT.gpe0_block_length, "ACPI GPE0_BLK");
+
+        if (!(acpi_gbl_FADT.gpe1_block_length & 0x1))
+                acpi_request_region(&acpi_gbl_FADT.xgpe1_block,
+                               acpi_gbl_FADT.gpe1_block_length, "ACPI GPE1_BLK");
+
+        return 0;
+}
+device_initcall(acpi_reserve_resources);
+
 acpi_status acpi_os_initialize(void)
 {
         return AE_OK;