commit 05e89fb576f580ac95e7a5d00bdb34830b09671a upstream.

It is no longer possible to build BT_HCIUART into the kernel when SERIAL_DEV_BUS is a loadable module, even if none of the SERIAL_DEV_BUS based implementations are selected:

drivers/bluetooth/hci_ldisc.o: In function `hci_uart_set_flow_control': hci_ldisc.c:(.text+0xb40): undefined reference to `serdev_device_set_flow_control' hci_ldisc.c:(.text+0xb5c): undefined reference to `serdev_device_set_tiocm'

This adds a dependency to avoid the broken configuration.

Fixes: 7841d554809b ("Bluetooth: hci_uart_set_flow_control: Fix NULL deref when using serdev") Signed-off-by: Arnd Bergmann arnd@arndb.de Signed-off-by: Marcel Holtmann marcel@holtmann.org Cc: stable@vger.kernel.org Signed-off-by: Arnd Bergmann arnd@arndb.de --- drivers/bluetooth/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/bluetooth/Kconfig b/drivers/bluetooth/Kconfig index 98a60db8e5d1..b33c8d6eb8c7 100644 --- a/drivers/bluetooth/Kconfig +++ b/drivers/bluetooth/Kconfig @@ -66,6 +66,7 @@ config BT_HCIBTSDIO

config BT_HCIUART tristate "HCI UART driver" + depends on SERIAL_DEV_BUS || !SERIAL_DEV_BUS depends on TTY help Bluetooth HCI UART driver. @@ -80,7 +81,6 @@ config BT_HCIUART config BT_HCIUART_SERDEV bool depends on SERIAL_DEV_BUS && BT_HCIUART - depends on SERIAL_DEV_BUS=y || SERIAL_DEV_BUS=BT_HCIUART default y

config BT_HCIUART_H4