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@@ -110,6 +110,31 @@ static struct acpi_ec {
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u8 handlers_installed;
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} *boot_ec, *first_ec;
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+/*
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+ * Some Asus system have exchanged ECDT data/command IO addresses.
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+ */
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+static int print_ecdt_error(const struct dmi_system_id *id)
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+{
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+ printk(KERN_NOTICE PREFIX "%s detected - "
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+ "ECDT has exchanged control/data I/O address\n",
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+ id->ident);
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+ return 0;
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+}
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+
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+static struct dmi_system_id __cpuinitdata ec_dmi_table[] = {
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+ {
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+ print_ecdt_error, "Asus L4R", {
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+ DMI_MATCH(DMI_BIOS_VERSION, "1008.006"),
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+ DMI_MATCH(DMI_PRODUCT_NAME, "L4R"),
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+ DMI_MATCH(DMI_BOARD_NAME, "L4R") }, NULL},
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+ {
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+ print_ecdt_error, "Asus M6R", {
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+ DMI_MATCH(DMI_BIOS_VERSION, "0207"),
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+ DMI_MATCH(DMI_PRODUCT_NAME, "M6R"),
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+ DMI_MATCH(DMI_BOARD_NAME, "M6R") }, NULL},
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+ {},
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+};
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+
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/* --------------------------------------------------------------------------
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Transaction Management
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-------------------------------------------------------------------------- */
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@@ -196,6 +221,8 @@ static int acpi_ec_wait(struct acpi_ec *ec, enum ec_event event, int force_poll)
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return 0;
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msleep(1);
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}
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+ if (acpi_ec_check_status(ec,event))
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+ return 0;
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}
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pr_err(PREFIX "acpi_ec_wait timeout, status = 0x%2.2x, event = %s\n",
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acpi_ec_read_status(ec),
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@@ -911,6 +938,15 @@ int __init acpi_ec_ecdt_probe(void)
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pr_info(PREFIX "EC description table is found, configuring boot EC\n");
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boot_ec->command_addr = ecdt_ptr->control.address;
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boot_ec->data_addr = ecdt_ptr->data.address;
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+ if (dmi_check_system(ec_dmi_table)) {
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+ /*
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+ * If the board falls into ec_dmi_table, it means
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+ * that ECDT table gives the incorrect command/status
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+ * & data I/O address. Just fix it.
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+ */
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+ boot_ec->data_addr = ecdt_ptr->control.address;
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+ boot_ec->command_addr = ecdt_ptr->data.address;
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+ }
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boot_ec->gpe = ecdt_ptr->gpe;
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boot_ec->handle = ACPI_ROOT_OBJECT;
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acpi_get_handle(ACPI_ROOT_OBJECT, ecdt_ptr->id, &boot_ec->handle);
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