The tas2781-hda supports multi-projects, In some projects, GpioInt() was dropped due to no IRQ connection. See the example code below:
But in smi_i2c_probe(), smi_spi_probe() (serial-multi-instantiate.c), if looking for IRQ by smi_get_irq() fails, it will return an error, will not add new device, and cause smi_probe() to fail: [ 2.356546] Serial bus multi instantiate pseudo device driver TXNW2781:00: error -ENXIO: IRQ index 0 not found [ 2.356561] Serial bus multi instantiate pseudo device driver TXNW2781:00: error -ENXIO: Error requesting irq at index 0
So need to add an exception case for these situations. BTW, this patch will take effect on both I2C and SPI devices.
Device (SPKR) { Name (_ADR, One) Name (_HID, "TXNW2781") Method (_CRS, 0, NotSerialized) { Name (RBUF, ResourceTemplate () { I2cSerialBusV2 (0x0038, ...) I2cSerialBusV2 (0x0039, ...) // GpioInt (Edge, ...) { 0x0000 } //"GpioInt (...) {}" was commented out due to no IRQ connection. }) Return (RBUF) } }
Baojun Xu (1): platform/x86: serial-multi-instantiate: Add IRQ_RESOURCE_OPT for IRQ missing projects
drivers/platform/x86/serial-multi-instantiate.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-)