4.11-stable review patch. If anyone has any objections, please let me know. ------------------ From: Alexey Brodkin <Alexey.Brodkin@xxxxxxxxxxxx> commit 3d6159640da9c9175d1ca42f151fc1a14caded59 upstream. DWC3 driver uses of_usb_get_phy_mode() which is implemented in drivers/usb/phy/of.c and in bare minimal configuration it might not be pulled in kernel binary. In case of ARC or ARM this could be easily reproduced with "allnodefconfig" +CONFIG_USB=m +CONFIG_USB_DWC3=m. On building all ends-up with: ---------------------->8------------------ Kernel: arch/arm/boot/Image is ready Kernel: arch/arm/boot/zImage is ready Building modules, stage 2. MODPOST 5 modules ERROR: "of_usb_get_phy_mode" [drivers/usb/dwc3/dwc3.ko] undefined! make[1]: *** [__modpost] Error 1 make: *** [modules] Error 2 ---------------------->8------------------ Signed-off-by: Alexey Brodkin <abrodkin@xxxxxxxxxxxx> Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> Cc: Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx> Cc: Geert Uytterhoeven <geert+renesas@xxxxxxxxx> Cc: Nicolas Pitre <nicolas.pitre@xxxxxxxxxx> Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Cc: Felipe Balbi <balbi@xxxxxxxxxx> Cc: Felix Fietkau <nbd@xxxxxxxx> Cc: Jeremy Kerr <jk@xxxxxxxxxx> Cc: linux-snps-arc@xxxxxxxxxxxxxxxxxxx Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/Makefile | 1 + 1 file changed, 1 insertion(+) --- a/drivers/Makefile +++ b/drivers/Makefile @@ -104,6 +104,7 @@ obj-$(CONFIG_USB_PHY) += usb/ obj-$(CONFIG_USB) += usb/ obj-$(CONFIG_PCI) += usb/ obj-$(CONFIG_USB_GADGET) += usb/ +obj-$(CONFIG_OF) += usb/ obj-$(CONFIG_SERIO) += input/serio/ obj-$(CONFIG_GAMEPORT) += input/gameport/ obj-$(CONFIG_INPUT) += input/