Hi Arnd,
> When CONFIG_BT_HCIUART_RTL is disabled, the hci_h5 driver produces a build
> warning because of an incorrect set of #ifdef guards:
>
> drivers/bluetooth/hci_h5.c:920:22: error: 'rtl_vnd' defined but not used [-Werror=unused-variable]
>
> Replacing the #ifdef with an IS_ENABLED() check shuts up the error
> and simplifies the logic.
>
> Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
> ---
> drivers/bluetooth/hci_h5.c | 10 +++-------
> 1 file changed, 3 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/bluetooth/hci_h5.c b/drivers/bluetooth/hci_h5.c
> index 8eede1197cd2..b10e64ba0ff4 100644
> --- a/drivers/bluetooth/hci_h5.c
> +++ b/drivers/bluetooth/hci_h5.c
> @@ -841,7 +841,6 @@ static void h5_serdev_remove(struct serdev_device *serdev)
> hci_uart_unregister_device(&h5->serdev_hu);
> }
>
> -#ifdef CONFIG_BT_HCIUART_RTL
> static int h5_btrtl_setup(struct h5 *h5)
> {
> struct btrtl_device_info *btrtl_dev;
> @@ -923,24 +922,21 @@ static struct h5_vnd rtl_vnd = {
> .close = h5_btrtl_close,
> .acpi_gpio_map = acpi_btrtl_gpios,
> };
> -#endif
>
> -#ifdef CONFIG_ACPI
> static const struct acpi_device_id h5_acpi_match[] = {
> -#ifdef CONFIG_BT_HCIUART_RTL
> { "OBDA8723", (kernel_ulong_t)&rtl_vnd },
> -#endif
> { },
> };
> MODULE_DEVICE_TABLE(acpi, h5_acpi_match);
> -#endif
>
> static struct serdev_device_driver h5_serdev_driver = {
> .probe = h5_serdev_probe,
> .remove = h5_serdev_remove,
> .driver = {
> .name = "hci_uart_h5",
> - .acpi_match_table = ACPI_PTR(h5_acpi_match),
> + .acpi_match_table = (IS_ENABLED(CONFIG_BT_HCIUART_RTL) &&
> + IS_ENABLED(CONFIG_ACPI)) ?
> + h5_acpi_match : 0,
> },
I do not like this construct at all. It will also blow up once we have a second vendor with H:5 support. We need to find another way to solve this.
Regards
Marcel
