Commit 3d9b8dd8 authored by Rafael J. Wysocki's avatar Rafael J. Wysocki

ACPI: EC: Use fast path in acpi_ec_add() for DSDT boot EC

If the boot EC comes from the DSDT, its ACPI handle is equal to the
handle of a device object with the PNP0C09 device ID.  If that
device object is passed to acpi_ec_add(), it is not necessary to
allocate a new EC structure for it and parse it, because that has
been done already, so change the function to use the fast path in
that case.
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent e3cfabcd
...@@ -1611,7 +1611,8 @@ static int acpi_ec_add(struct acpi_device *device) ...@@ -1611,7 +1611,8 @@ static int acpi_ec_add(struct acpi_device *device)
strcpy(acpi_device_name(device), ACPI_EC_DEVICE_NAME); strcpy(acpi_device_name(device), ACPI_EC_DEVICE_NAME);
strcpy(acpi_device_class(device), ACPI_EC_CLASS); strcpy(acpi_device_class(device), ACPI_EC_CLASS);
if (!strcmp(acpi_device_hid(device), ACPI_ECDT_HID)) { if ((boot_ec && boot_ec->handle == device->handle) ||
!strcmp(acpi_device_hid(device), ACPI_ECDT_HID)) {
/* Fast path: this device corresponds to the boot EC. */ /* Fast path: this device corresponds to the boot EC. */
ec = boot_ec; ec = boot_ec;
} else { } else {
......
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