4.14-stable review patch. If anyone has any objections, please let me know.
------------------
From: Arnd Bergmann <arnd@xxxxxxxx>
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@xxxxxxxx>
Signed-off-by: Marcel Holtmann <marcel@xxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/bluetooth/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- 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