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Subject[PATCH 4.19 103/134] usb: mtu3: fix EXTCON dependency
Date
4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Arnd Bergmann <arnd@arndb.de>

commit 3d54d10c6afed34fd45b852bf76f55e8da31d8ef upstream.

When EXTCON is a loadable module, mtu3 fails to link as built-in:

drivers/usb/mtu3/mtu3_plat.o: In function `mtu3_probe':
mtu3_plat.c:(.text+0x690): undefined reference to `extcon_get_edev_by_phandle'

Add a Kconfig dependency to force mtu3 also to be a loadable module
if extconn is, but still allow it to be built without extcon.

Fixes: d0ed062a8b75 ("usb: mtu3: dual-role mode support")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/usb/mtu3/Kconfig | 1 +
1 file changed, 1 insertion(+)

--- a/drivers/usb/mtu3/Kconfig
+++ b/drivers/usb/mtu3/Kconfig
@@ -4,6 +4,7 @@ config USB_MTU3
tristate "MediaTek USB3 Dual Role controller"
depends on USB || USB_GADGET
depends on ARCH_MEDIATEK || COMPILE_TEST
+ depends on EXTCON || !EXTCON
select USB_XHCI_MTK if USB_SUPPORT && USB_XHCI_HCD
help
Say Y or M here if your system runs on MediaTek SoCs with

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