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authorAlexey Starikovskiy <astarikovskiy@suse.de>2009-10-02 20:21:33 +0400
committerLen Brown <len.brown@intel.com>2009-10-03 01:20:21 -0400
commit0adf3c746a73684b3f8c2821a584e1db998f61e9 (patch)
tree90589b58eb73649814b25752c84ec9b369c86caa
parent0efe5e32c8729ef44b00d9a7203e4c99a6378b27 (diff)
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ACPI: EC: Rewrite DMI checks
Use dmi_check_system() for DMI matching. Don't use string "Notebook" for matching MSI hardware. http://bugzilla.kernel.org/show_bug.cgi?id=14081 Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
-rw-r--r--drivers/acpi/ec.c37
1 files changed, 31 insertions, 6 deletions
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index f70796081c4..3fcb9132881 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -119,6 +119,7 @@ static struct acpi_ec {
} *boot_ec, *first_ec;
static int EC_FLAGS_MSI; /* Out-of-spec MSI controller */
+static int EC_FLAGS_VALIDATE_ECDT; /* ASUStec ECDTs need to be validated */
/* --------------------------------------------------------------------------
Transaction Management
@@ -899,6 +900,33 @@ static const struct acpi_device_id ec_device_ids[] = {
{"", 0},
};
+/* ASUStek often supplies us with broken ECDT, validate it */
+static int ec_validate_ecdt(const struct dmi_system_id *id)
+{
+ EC_FLAGS_VALIDATE_ECDT = 1;
+ return 0;
+}
+
+/* MSI EC needs special treatment, enable it */
+static int ec_flag_msi(const struct dmi_system_id *id)
+{
+ EC_FLAGS_MSI = 1;
+ EC_FLAGS_VALIDATE_ECDT = 1;
+ return 0;
+}
+
+static struct dmi_system_id __initdata ec_dmi_table[] = {
+ {
+ ec_flag_msi, "MSI hardware", {
+ DMI_MATCH(DMI_BIOS_VENDOR, "Micro-Star"),
+ DMI_MATCH(DMI_CHASSIS_VENDOR, "MICRO-Star") }, NULL},
+ {
+ ec_validate_ecdt, "ASUS hardware", {
+ DMI_MATCH(DMI_BIOS_VENDOR, "ASUS") }, NULL},
+ {},
+};
+
+
int __init acpi_ec_ecdt_probe(void)
{
acpi_status status;
@@ -911,11 +939,7 @@ int __init acpi_ec_ecdt_probe(void)
/*
* Generate a boot ec context
*/
- if (dmi_name_in_vendors("Micro-Star") ||
- dmi_name_in_vendors("Notebook")) {
- pr_info(PREFIX "Enabling special treatment for EC from MSI.\n");
- EC_FLAGS_MSI = 1;
- }
+ dmi_check_system(ec_dmi_table);
status = acpi_get_table(ACPI_SIG_ECDT, 1,
(struct acpi_table_header **)&ecdt_ptr);
if (ACPI_SUCCESS(status)) {
@@ -926,7 +950,7 @@ int __init acpi_ec_ecdt_probe(void)
boot_ec->handle = ACPI_ROOT_OBJECT;
acpi_get_handle(ACPI_ROOT_OBJECT, ecdt_ptr->id, &boot_ec->handle);
/* Don't trust ECDT, which comes from ASUSTek */
- if (!dmi_name_in_vendors("ASUS") && EC_FLAGS_MSI == 0)
+ if (!EC_FLAGS_VALIDATE_ECDT)
goto install;
saved_ec = kmalloc(sizeof(struct acpi_ec), GFP_KERNEL);
if (!saved_ec)
@@ -934,6 +958,7 @@ int __init acpi_ec_ecdt_probe(void)
memcpy(saved_ec, boot_ec, sizeof(struct acpi_ec));
/* fall through */
}
+
/* This workaround is needed only on some broken machines,
* which require early EC, but fail to provide ECDT */
printk(KERN_DEBUG PREFIX "Look up EC in DSDT\n");