Hi Arnd, >> At the moment we only support ACPI enumeration for serial port attached >> RTL bluetooth controllers. >> >> This commit adds a dependency on ACPI to the BT_HCIUART_RTL configuration >> option, fixing the following warning when ACPI is not enabled: >> >> drivers/bluetooth/hci_h5.c:920:22: warning: 'rtl_vnd' defined but not used >> >> Cc: Arnd Bergmann <arnd@xxxxxxxx> >> Reported-by: Arnd Bergmann <arnd@xxxxxxxx> >> Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx> > > This fixes the warning, > > Acked-by: Arnd Bergmann <arnd@xxxxxxxx> > > I wonder whether CONFIG_BT_HCIUART_3WIRE should also > depend on ACPI and/or become a silent option, since it's currently > useless when either ACPI or BT_HCIUART_RTL are disabled, > and it seems possible that things break differently when another > back-end gets added there. why would it be useless? There is still a line discipline mode that it can be used for. Moving this all to the new bt3wire.c driver would have been cleaner and less Kconfig messy. Regards Marcel