[PATCH] soundwire: slave: Don't register devices that are disabled in ACPI

[Charles Keepax]

If a piece of hardware is disabled in ACPI it shouldn't be added to the
bus. Add code to handle this similar to other buses like SPI/I2C.

Signed-off-by: Charles Keepax <ckeepax@xxxxxxxxxxxxxxxxxxxxx>
---
 drivers/soundwire/slave.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/soundwire/slave.c b/drivers/soundwire/slave.c
index f5a3ca3b9dda4..ff763b692078d 100644
--- a/drivers/soundwire/slave.c
+++ b/drivers/soundwire/slave.c
@@ -115,6 +115,9 @@ static bool find_slave(struct sdw_bus *bus,
 	u64 addr;
 	int ret;
 
+	if (acpi_bus_get_status(adev) || !acpi_dev_ready_for_enumeration(adev))
+		return false;
+
 	ret = acpi_get_local_u64_address(adev->handle, &addr);
 	if (ret < 0)
 		return false;
-- 
2.47.3