Hi Arnd,
> When SERDEV is a loadable module, and the HCI code is built-in, we
> get a link error:
>
> drivers/bluetooth/built-in.o: In function `ll_close':
> hci_ll.c:(.text+0x278d): undefined reference to `serdev_device_close'
> drivers/bluetooth/built-in.o: In function `hci_ti_probe':
> hci_ll.c:(.text+0x283c): undefined reference to `hci_uart_register_device'
> drivers/bluetooth/built-in.o: In function `ll_setup':
> hci_ll.c:(.text+0x289e): undefined reference to `serdev_device_set_flow_control'
> hci_ll.c:(.text+0x2b9c): undefined reference to `serdev_device_set_baudrate'
> drivers/bluetooth/built-in.o: In function `ll_open':
> hci_ll.c:(.text+0x2c77): undefined reference to `serdev_device_open'
> drivers/bluetooth/built-in.o: In function `ll_init':
> (.init.text+0x10d): undefined reference to `__serdev_device_driver_register'
>
> We already have CONFIG_BT_HCIUART_SERDEV as a Kconfig symbol that is
> set when the serdev code is reachable by a driver. Unlike the nokia
> driver, this one can also be built when serdev is completely disabled,
> so we add a dependency on serdev either being usable or disabled here.
>
> Fixes: 371805522f87 ("bluetooth: hci_uart: add LL protocol serdev driver support")
> Cc: Rob Herring <robh@xxxxxxxxxx>
> 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 a63130ef2b98..b2cf0ae6b62d 100644
> --- a/drivers/bluetooth/Kconfig
> +++ b/drivers/bluetooth/Kconfig
> @@ -133,6 +133,7 @@ config BT_HCIUART_ATH3K
> config BT_HCIUART_LL
> bool "HCILL protocol support"
> depends on BT_HCIUART
> + depends on BT_HCIUART_SERDEV || SERIAL_DEV_BUS=n
> help
> HCILL (HCI Low Level) is a serial protocol for communication
> between Bluetooth device and host. This protocol is required for
this does not apply against bluetooth-next tree. Can you respin it with the acks.
Regards
Marcel
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