2 files changed, 12 insertions, 9 deletions

diff --git a/drivers/acpi/acpica/acglobal.h b/drivers/acpi/acpica/acglobal.h
index 18e796fe4295..1d192142c691 100644
--- a/drivers/acpi/acpica/acglobal.h
+++ b/drivers/acpi/acpica/acglobal.h
@@ -108,7 +108,7 @@ u8 ACPI_INIT_GLOBAL(acpi_gbl_use_default_register_widths, TRUE);
 /*
  * Optionally enable output from the AML Debug Object.
  */
-u8 ACPI_INIT_GLOBAL(acpi_gbl_enable_aml_debug_object, FALSE);
+u32 ACPI_INIT_GLOBAL(acpi_gbl_enable_aml_debug_object, FALSE);
 
 /*
  * Optionally copy the entire DSDT to local memory (instead of simply
diff --git a/drivers/acpi/acpica/evxfevnt.c b/drivers/acpi/acpica/evxfevnt.c
index 0fb9e94878d9..304825528d48 100644
--- a/drivers/acpi/acpica/evxfevnt.c
+++ b/drivers/acpi/acpica/evxfevnt.c
@@ -70,6 +70,7 @@ acpi_ev_get_gpe_device(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
 acpi_status acpi_enable(void)
 {
         acpi_status status;
+        int retry;
 
         ACPI_FUNCTION_TRACE(acpi_enable);
 
@@ -98,16 +99,18 @@ acpi_status acpi_enable(void)
 
         /* Sanity check that transition succeeded */
 
-        if (acpi_hw_get_mode() != ACPI_SYS_MODE_ACPI) {
-                ACPI_ERROR((AE_INFO,
-                            "Hardware did not enter ACPI mode"));
-                return_ACPI_STATUS(AE_NO_HARDWARE_RESPONSE);
+        for (retry = 0; retry < 30000; ++retry) {
+                if (acpi_hw_get_mode() == ACPI_SYS_MODE_ACPI) {
+                        if (retry != 0)
+                                ACPI_WARNING((AE_INFO,
+                                "Platform took > %d00 usec to enter ACPI mode", retry));
+                        return_ACPI_STATUS(AE_OK);
+                }
+                acpi_os_stall(100);     /* 100 usec */
         }
 
-        ACPI_DEBUG_PRINT((ACPI_DB_INIT,
-                          "Transition to ACPI mode successful\n"));
-
-        return_ACPI_STATUS(AE_OK);
+        ACPI_ERROR((AE_INFO, "Hardware did not enter ACPI mode"));
+        return_ACPI_STATUS(AE_NO_HARDWARE_RESPONSE);
 }
 
 ACPI_EXPORT_SYMBOL(acpi_enable)