On Wed, 22 Mar 2023, Arnd Bergmann wrote: > From: Arnd Bergmann <arnd@xxxxxxxx> > > The driver needs both CRC32 and CRC8 to link correctly: > > ld.lld: error: undefined symbol: crc8_populate_msb > >>> referenced by btnxpuart.c > >>> drivers/bluetooth/btnxpuart.o:(nxp_serdev_probe) in archive vmlinux.a > ld.lld: error: undefined symbol: crc8 > >>> referenced by btnxpuart.c > >>> drivers/bluetooth/btnxpuart.o:(nxp_send_ack) in archive vmlinux.a > > Fixes: 3e662aa4453a ("Bluetooth: NXP: Add protocol support for NXP Bluetooth chipsets") > Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx> > --- > drivers/bluetooth/Kconfig | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/drivers/bluetooth/Kconfig b/drivers/bluetooth/Kconfig > index 0703bdd44140..f84322d375de 100644 > --- a/drivers/bluetooth/Kconfig > +++ b/drivers/bluetooth/Kconfig > @@ -469,6 +469,7 @@ config BT_NXPUART > tristate "NXP protocol support" > depends on SERIAL_DEV_BUS > select CRC32 > + select CRC8 > help > NXP is serial driver required for NXP Bluetooth > devices with UART interface. > Right. ...I should have realized this was missing too when I noticed select CRC32 wasn't there. Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@xxxxxxxxxxxxxxx> -- i.