From b75dd2977fc3c5848f739681fc799f27b1322e44 Mon Sep 17 00:00:00 2001
From: Lv Zheng <lv.zheng@intel.com>
Date: Sat, 8 Jun 2013 00:58:48 +0000
Subject: ACPICA: Add option to disable loading of SSDTs from the RSDT/XSDT
Optionally do not load any SSDTs from the RSDT/XSDT during
initialization. This can be useful for overriding SSDTs
using DSDT overriding, thus useful for debugging ACPI
problems on some machines. Lv Zheng. ACPICA BZ 1005.
References: https://bugs.acpica.org/show_bug.cgi?id=1005
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---
drivers/acpi/acpica/tbxfload.c | 25 ++++++++++---------------
1 file changed, 10 insertions(+), 15 deletions(-)
(limited to 'drivers/acpi/acpica/tbxfload.c')
diff --git a/drivers/acpi/acpica/tbxfload.c b/drivers/acpi/acpica/tbxfload.c
index 67e046ec8f0a..0ba9e328d5d7 100644
--- a/drivers/acpi/acpica/tbxfload.c
+++ b/drivers/acpi/acpica/tbxfload.c
@@ -53,8 +53,6 @@ ACPI_MODULE_NAME("tbxfload")
/* Local prototypes */
static acpi_status acpi_tb_load_namespace(void);
-static int no_auto_ssdt;
-
/*******************************************************************************
*
* FUNCTION: acpi_load_tables
@@ -180,8 +178,16 @@ static acpi_status acpi_tb_load_namespace(void)
continue;
}
- if (no_auto_ssdt) {
- printk(KERN_WARNING "ACPI: SSDT ignored due to \"acpi_no_auto_ssdt\"\n");
+ /*
+ * Optionally do not load any SSDTs from the RSDT/XSDT. This can
+ * be useful for debugging ACPI problems on some machines.
+ */
+ if (acpi_gbl_disable_ssdt_table_load) {
+ ACPI_INFO((AE_INFO, "Ignoring %4.4s at %p",
+ acpi_gbl_root_table_list.tables[i].signature.
+ ascii, ACPI_CAST_PTR(void,
+ acpi_gbl_root_table_list.
+ tables[i].address)));
continue;
}
@@ -376,14 +382,3 @@ acpi_status acpi_unload_parent_table(acpi_handle object)
}
ACPI_EXPORT_SYMBOL(acpi_unload_parent_table)
-
-static int __init acpi_no_auto_ssdt_setup(char *s) {
-
- printk(KERN_NOTICE "ACPI: SSDT auto-load disabled\n");
-
- no_auto_ssdt = 1;
-
- return 1;
-}
-
-__setup("acpi_no_auto_ssdt", acpi_no_auto_ssdt_setup);
--
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