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[4.14,only,backport] Bluetooth: BT_HCIUART now depends on SERIAL_DEV_BUS

Message ID 20180216160556.1634805-1-arnd@arndb.de
State New
Headers show
Series [4.14,only,backport] Bluetooth: BT_HCIUART now depends on SERIAL_DEV_BUS | expand

Commit Message

Arnd Bergmann Feb. 16, 2018, 4:05 p.m. UTC
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(-)

-- 
2.9.0
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Patch

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