diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index ce91560229f5356e4c83c87fe98a1d94d827da94..5d0283cd3a81997fde0eaf901417ac0de33bf16b 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -170,7 +170,10 @@ and is between 256 and 4096 characters. It is defined in the file
acpi_os_name= [HW,ACPI] Tell ACPI BIOS the name of the OS
Format: To spoof as Windows 98: ="Microsoft Windows"
- acpi_osi= [HW,ACPI] empty param disables _OSI
+ acpi_osi= [HW,ACPI] Modify list of supported OS interface strings
+ acpi_osi="string1" # add string1 -- only one string
+ acpi_osi="!string2" # remove built-in string2
+ acpi_osi= # disable all strings
acpi_serialize [HW,ACPI] force serialization of AML methods
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index b998340e23d4126074a36cc1af38d05461b4bde9..58ceb18ec997f7c16b62c1bba6035411a61450ab 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -33,6 +33,7 @@
#include <linux/interrupt.h>
#include <linux/kmod.h>
#include <linux/delay.h>
+#include <linux/dmi.h>
#include <linux/workqueue.h>
#include <linux/nmi.h>
#include <linux/acpi.h>
@@ -73,6 +74,21 @@ static void *acpi_irq_context;
static struct workqueue_struct *kacpid_wq;
static struct workqueue_struct *kacpi_notify_wq;
+#define OSI_STRING_LENGTH_MAX 64 /* arbitrary */
+static char osi_additional_string[OSI_STRING_LENGTH_MAX];
+
+#define OSI_LINUX_ENABLED
+#ifdef OSI_LINUX_ENABLED
+int osi_linux = 1; /* enable _OSI(Linux) by default */
+#else
+int osi_linux; /* disable _OSI(Linux) by default */
+#endif
+
+
+#ifdef CONFIG_DMI
+static struct __initdata dmi_system_id acpi_osl_dmi_table[];
+#endif
+
static void __init acpi_request_region (struct acpi_generic_address *addr,
unsigned int length, char *desc)
{
@@ -121,8 +137,9 @@ static int __init acpi_reserve_resources(void)
}
device_initcall(acpi_reserve_resources);
-acpi_status acpi_os_initialize(void)
+acpi_status __init acpi_os_initialize(void)
{
+ dmi_check_system(acpi_osl_dmi_table);
return AE_OK;
}
@@ -960,20 +977,38 @@ static int __init acpi_os_name_setup(char *str)
__setup("acpi_os_name=", acpi_os_name_setup);
+static void enable_osi_linux(int enable) {
+
+ if (osi_linux != enable)
+ printk(KERN_INFO PREFIX "%sabled _OSI(Linux)\n",
+ enable ? "En": "Dis");
+
+ osi_linux = enable;
+ return;
+}
+
/*
- * _OSI control
+ * Modify the list of "OS Interfaces" reported to BIOS via _OSI
+ *
* empty string disables _OSI
- * TBD additional string adds to _OSI
+ * string starting with '!' disables that string
+ * otherwise string is added to list, augmenting built-in strings
*/
static int __init acpi_osi_setup(char *str)
{
if (str == NULL || *str == '\0') {
printk(KERN_INFO PREFIX "_OSI method disabled\n");
acpi_gbl_create_osi_method = FALSE;
- } else {
- /* TBD */
- printk(KERN_ERR PREFIX "_OSI additional string ignored -- %s\n",
- str);
+ } else if (*str == '!') {
+ if (acpi_osi_invalidate(++str) == AE_OK)
+ printk(KERN_INFO PREFIX "Deleted _OSI(%s)\n", str);
+ } else if (!strcmp("!Linux", str)) {
+ enable_osi_linux(0);
+ } else if (!strcmp("Linux", str)) {
+ enable_osi_linux(1);
+ } else if (*osi_additional_string == '\0') {
+ strncpy(osi_additional_string, str, OSI_STRING_LENGTH_MAX);
+ printk(KERN_INFO PREFIX "Added _OSI(%s)\n", str);
}
return 1;
@@ -1143,11 +1178,28 @@ acpi_status acpi_os_release_object(acpi_cache_t * cache, void *object)
acpi_status
acpi_os_validate_interface (char *interface)
{
-
- return AE_SUPPORT;
+ if (!strncmp(osi_additional_string, interface, OSI_STRING_LENGTH_MAX))
+ return AE_OK;
+ if (!strcmp("Linux", interface)) {
+ printk(KERN_WARNING PREFIX
+ "System BIOS is requesting _OSI(Linux)\n");
+#ifdef OSI_LINUX_ENABLED
+ printk(KERN_WARNING PREFIX
+ "Please test with \"acpi_osi=!Linux\"\n"
+ "Please send dmidecode "
+ "to linux-acpi@vger.kernel.org\n");
+#else
+ printk(KERN_WARNING PREFIX
+ "If \"acpi_osi=Linux\" works better,\n"
+ "Please send dmidecode "
+ "to linux-acpi@vger.kernel.org\n");
+#endif
+ if(osi_linux)
+ return AE_OK;
+ }
+ return AE_SUPPORT;
}
-
/******************************************************************************
*
* FUNCTION: acpi_os_validate_address
@@ -1174,5 +1226,51 @@ acpi_os_validate_address (
return AE_OK;
}
+#ifdef CONFIG_DMI
+#ifdef OSI_LINUX_ENABLED
+static int dmi_osi_not_linux(struct dmi_system_id *d)
+{
+ printk(KERN_NOTICE "%s detected: requires not _OSI(Linux)\n", d->ident);
+ enable_osi_linux(0);
+ return 0;
+}
+#else
+static int dmi_osi_linux(struct dmi_system_id *d)
+{
+ printk(KERN_NOTICE "%s detected: requires _OSI(Linux)\n", d->ident);
+ enable_osi_linux(1);
+ return 0;
+}
+#endif
+
+static struct dmi_system_id acpi_osl_dmi_table[] __initdata = {
+#ifdef OSI_LINUX_ENABLED
+ /*
+ * Boxes that need NOT _OSI(Linux)
+ */
+ {
+ .callback = dmi_osi_not_linux,
+ .ident = "Toshiba Satellite P100",
+ .matches = {
+ DMI_MATCH(DMI_BOARD_VENDOR, "TOSHIBA"),
+ DMI_MATCH(DMI_BOARD_NAME, "Satellite P100"),
+ },
+ },
+#else
+ /*
+ * Boxes that need _OSI(Linux)
+ */
+ {
+ .callback = dmi_osi_linux,
+ .ident = "Intel Napa CRB",
+ .matches = {
+ DMI_MATCH(DMI_BOARD_VENDOR, "Intel Corporation"),
+ DMI_MATCH(DMI_BOARD_NAME, "MPAD-MSAE Customer Reference Boards"),
+ },
+ },
+#endif
+ {}
+};
+#endif /* CONFIG_DMI */
#endif
diff --git a/drivers/acpi/utilities/uteval.c b/drivers/acpi/utilities/uteval.c
index 13d5879cd98b92148acb215ac411a8280b862090..8ec6f8e481385d2908f286249903d44db35cf184 100644
--- a/drivers/acpi/utilities/uteval.c
+++ b/drivers/acpi/utilities/uteval.c
@@ -59,10 +59,9 @@ acpi_ut_translate_one_cid(union acpi_operand_object *obj_desc,
/*
* Strings supported by the _OSI predefined (internal) method.
*/
-static const char *acpi_interfaces_supported[] = {
+static char *acpi_interfaces_supported[] = {
/* Operating System Vendor Strings */
- "Linux",
"Windows 2000",
"Windows 2001",
"Windows 2001 SP0",
@@ -156,6 +155,31 @@ acpi_status acpi_ut_osi_implementation(struct acpi_walk_state *walk_state)
return_ACPI_STATUS(AE_CTRL_TERMINATE);
}
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_osi_invalidate
+ *
+ * PARAMETERS: interface_string
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: invalidate string in pre-defiend _OSI string list
+ *
+ ******************************************************************************/
+
+acpi_status acpi_osi_invalidate(char *interface)
+{
+ int i;
+
+ for (i = 0; i < ACPI_ARRAY_LENGTH(acpi_interfaces_supported); i++) {
+ if (!ACPI_STRCMP(interface, acpi_interfaces_supported[i])) {
+ *acpi_interfaces_supported[i] = '\0';
+ return AE_OK;
+ }
+ }
+ return AE_NOT_FOUND;
+}
+
/*******************************************************************************
*
* FUNCTION: acpi_ut_evaluate_object
diff --git a/drivers/acpi/utilities/utxface.c b/drivers/acpi/utilities/utxface.c
index e9a57806cd34ecc32c1ab9d9881efabbeb96bfbc..2d496918b3cda4593d383b36cce08f18e2535253 100644
--- a/drivers/acpi/utilities/utxface.c
+++ b/drivers/acpi/utilities/utxface.c
@@ -61,7 +61,7 @@ ACPI_MODULE_NAME("utxface")
* called, so any early initialization belongs here.
*
******************************************************************************/
-acpi_status acpi_initialize_subsystem(void)
+acpi_status __init acpi_initialize_subsystem(void)
{
acpi_status status;
@@ -108,8 +108,6 @@ acpi_status acpi_initialize_subsystem(void)
return_ACPI_STATUS(status);
}
-ACPI_EXPORT_SYMBOL(acpi_initialize_subsystem)
-
/*******************************************************************************
*
* FUNCTION: acpi_enable_subsystem
diff --git a/include/acpi/acpiosxf.h b/include/acpi/acpiosxf.h
index 5e07db0d46e9997752161028ed0e4e4dc26e2219..ca882b8e7d108e9d069ae053dd384e459bcec9a4 100644
--- a/include/acpi/acpiosxf.h
+++ b/include/acpi/acpiosxf.h
@@ -78,7 +78,7 @@ struct acpi_signal_fatal_info {
/*
* OSL Initialization and shutdown primitives
*/
-acpi_status acpi_os_initialize(void);
+acpi_status __initdata acpi_os_initialize(void);
acpi_status acpi_os_terminate(void);
@@ -236,6 +236,7 @@ acpi_os_derive_pci_id(acpi_handle rhandle,
* Miscellaneous
*/
acpi_status acpi_os_validate_interface(char *interface);
+acpi_status acpi_osi_invalidate(char* interface);
acpi_status
acpi_os_validate_address(u8 space_id,
diff --git a/include/acpi/acpixf.h b/include/acpi/acpixf.h
index e08f7df85a4fdc2974e2c7e8ff7ba777e032f4dc..b5cca5daa348802e25426990f9e290db9d3621f9 100644
--- a/include/acpi/acpixf.h
+++ b/include/acpi/acpixf.h
@@ -55,7 +55,7 @@ acpi_status
acpi_initialize_tables(struct acpi_table_desc *initial_storage,
u32 initial_table_count, u8 allow_resize);
-acpi_status acpi_initialize_subsystem(void);
+acpi_status __init acpi_initialize_subsystem(void);
acpi_status acpi_enable_subsystem(u32 flags);