diff options
| author |   Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2016-06-09 23:48:54 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2016-06-09 23:48:54 +0200 |
| commit | bd6ac2abc9937eb7613aa194195fd98fe9312b38 (patch) | |
| tree | f7386c717352410ba2fdfc45d1cb1b29aba8f9f2 /drivers/acpi/ec.c | |
| parent | Linux 4.7-rc2 (diff) | |
| parent | ACPI / EC: Fix a boot EC regresion by restoring boot EC support for the DSDT EC (diff) | |
| download | linux-dev-bd6ac2abc9937eb7613aa194195fd98fe9312b38.tar.xz linux-dev-bd6ac2abc9937eb7613aa194195fd98fe9312b38.zip | |
Merge branch 'acpi-ec'
* acpi-ec:
ACPI / EC: Fix a boot EC regresion by restoring boot EC support for the DSDT EC
Diffstat (limited to 'drivers/acpi/ec.c')
| -rw-r--r-- | drivers/acpi/ec.c | 29 |
1 files changed, 22 insertions, 7 deletions
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c index 0e70181f150c..73c76d646064 100644 --- a/drivers/acpi/ec.c +++ b/drivers/acpi/ec.c @@ -1446,10 +1446,30 @@ ec_parse_io_ports(struct acpi_resource *resource, void *context) return AE_OK; } -int __init acpi_boot_ec_enable(void) +static const struct acpi_device_id ec_device_ids[] = { + {"PNP0C09", 0}, + {"", 0}, +}; + +int __init acpi_ec_dsdt_probe(void) { - if (!boot_ec) + acpi_status status; + + if (boot_ec) return 0; + + /* + * Finding EC from DSDT if there is no ECDT EC available. When this + * function is invoked, ACPI tables have been fully loaded, we can + * walk namespace now. + */ + boot_ec = make_acpi_ec(); + if (!boot_ec) + return -ENOMEM; + status = acpi_get_devices(ec_device_ids[0].id, + ec_parse_device, boot_ec, NULL); + if (ACPI_FAILURE(status) || !boot_ec->handle) + return -ENODEV; if (!ec_install_handlers(boot_ec)) { first_ec = boot_ec; return 0; @@ -1457,11 +1477,6 @@ int __init acpi_boot_ec_enable(void) return -EFAULT; } -static const struct acpi_device_id ec_device_ids[] = { - {"PNP0C09", 0}, - {"", 0}, -}; - #if 0 /* * Some EC firmware variations refuses to respond QR_EC when SCI_EVT is not |