PNP / ACPI: add ACPI_RESOURCE_TYPE_SERIAL_BUS as a valid type

An error message is printed for resources of type 19, which is a valid
supported resource type.  The Firmware Test Suite tool (fwts) reports
this as a test failure.  This change fixes the false test failures
for ASL that use type 19 (ACPI_RESOURCE_TYPE_SERIAL_BUS) resources.

Signed-off-by: Harb Abdulhamid <harba@codeaurora.org>
Signed-off-by: Timur Tabi <timur@codeaurora.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/pnp/pnpacpi/rsparser.c b/drivers/pnp/pnpacpi/rsparser.c
index 05796495be0e..4b717c699313 100644
--- a/drivers/pnp/pnpacpi/rsparser.c
+++ b/drivers/pnp/pnpacpi/rsparser.c
@@ -252,6 +252,10 @@ static acpi_status pnpacpi_allocated_resource(struct acpi_resource *res,
         case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
                 break;
 
+        case ACPI_RESOURCE_TYPE_SERIAL_BUS:
+                /* serial bus connections (I2C/SPI/UART) are not pnp */
+                break;
+
         default:
                 dev_warn(&dev->dev, "unknown resource type %d in _CRS\n",
                          res->type);