Hi Tobias,
> We see the following link error with CONFIG_BT_HCIUART=y,
> CONFIG_BT_HCIUART_LL=y and CONFIG_SERIAL_DEV_BUS=m:
>
> drivers/built-in.o: In function 'll_close':
> supp.c:(.text+0x55add4): undefined reference to 'serdev_device_close'
> supp.c:(.text+0x55add4): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol 'serdev_device_close'
> drivers/built-in.o: In function 'll_open':
> supp.c:(.text+0x55aed0): undefined reference to 'serdev_device_open'
> supp.c:(.text+0x55aed0): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol 'serdev_device_open'
> drivers/built-in.o: In function `hci_ti_probe':
> supp.c:(.text+0x55b00c): undefined reference to 'hci_uart_register_device'
> supp.c:(.text+0x55b00c): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol 'hci_uart_register_device'
> drivers/built-in.o: In function `ll_setup':
> supp.c:(.text+0x55b08c): undefined reference to 'serdev_device_set_flow_control'
> supp.c:(.text+0x55b08c): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol 'serdev_device_set_flow_control'
> supp.c:(.text+0x55b324): undefined reference to 'serdev_device_set_baudrate'
> supp.c:(.text+0x55b324): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol 'serdev_device_set_baudrate'
> drivers/built-in.o: In function 'll_init':
> supp.c:(.init.text+0x1b508): undefined reference to '__serdev_device_driver_register'
> supp.c:(.init.text+0x1b508): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol '__serdev_device_driver_register'
>
> Fix this by dependig BT_HCIUART_LL on the BT_HCIUART_SERDEV symbol.
> This implies a dependency on BT_HCIUART and hci_ll.c is only compiled in
> if SERIAl_DEV_BUS is built in or SERIAL_DEV_BUS and BT_HCIUART are
> modules.
>
> Fixes: 371805522f87 ("bluetooth: hci_uart: add LL protocol serdev driver support")
> Signed-off-by: Tobias Regnery <tobias.regnery@xxxxxxxxx>
> ---
> Hi,
>
> I'm not sure if this is the right fix because the dependencies are quite
> complicated but at least the build failure goes away with this change.
>
> drivers/bluetooth/Kconfig | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
patch has been applied to bluetooth-next tree.
Regards
Marcel
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