diff options
Diffstat (limited to 'drivers/acpi/ec.c')
| -rw-r--r-- | drivers/acpi/ec.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c index 7d6b8411979..d411017f8c0 100644 --- a/drivers/acpi/ec.c +++ b/drivers/acpi/ec.c @@ -913,12 +913,20 @@ int __init acpi_ec_ecdt_probe(void) boot_ec->gpe = ecdt_ptr->gpe; boot_ec->handle = ACPI_ROOT_OBJECT; } else { + /* This workaround is needed only on some broken machines, + * which require early EC, but fail to provide ECDT */ + acpi_handle x; printk(KERN_DEBUG PREFIX "Look up EC in DSDT\n"); status = acpi_get_devices(ec_device_ids[0].id, ec_parse_device, boot_ec, NULL); /* Check that acpi_get_devices actually find something */ if (ACPI_FAILURE(status) || !boot_ec->handle) goto error; + /* We really need to limit this workaround, the only ASUS, + * which needs it, has fake EC._INI method, so use it as flag. + */ + if (ACPI_FAILURE(acpi_get_handle(boot_ec->handle, "_INI", &x))) + goto error; } ret = ec_install_handlers(boot_ec); |