Hello,

Currently i am patching the usb drivers from kernel-3.10.20 to kernel-4.14 in openwrt but i have difficulties in compiling the usb drivers.

the usb drivers is the host drivers.

From the error i understood that it missing the reference for usb enable clock but i don't know how to deal with it.

Can you help me please...

the error while compiling

arm-openwrt-linux-muslgnueabi-ld: drivers/usb/host/usb20/musb_core.o: in function `musb_suspend_noirq':
target-arm_cortex-a7+neon-vfpv4_musl_eabi/linux-mediatek_mt7623/linux-4.14.154/drivers/usb/host/usb20/musb_core.c:2340: undefined reference to `usb_enable_clock'
arm-openwrt-linux-muslgnueabi-ld: target-arm_cortex-a7+neon-vfpv4_musl_eabi/linux-mediatek_mt7623/linux-4.14.154/drivers/usb/host/usb20/musb_core.c:2343: undefined reference to `usb_phy_context_save'
arm-openwrt-linux-muslgnueabi-ld: target-arm_cortex-a7+neon-vfpv4_musl_eabi/linux-mediatek_mt7623/linux-4.14.154/drivers/usb/host/usb20/musb_core.c:2346: undefined reference to `usb_enable_clock'
arm-openwrt-linux-muslgnueabi-ld: drivers/usb/host/usb20/musb_core.o: in function `musb_resume_noirq':
target-arm_cortex-a7+neon-vfpv4_musl_eabi/linux-mediatek_mt7623/linux-4.14.154/drivers/usb/host/usb20/musb_core.c:2360: undefined reference to `usb_enable_clock'
arm-openwrt-linux-muslgnueabi-ld: target-arm_cortex-a7+neon-vfpv4_musl_eabi/linux-mediatek_mt7623/linux-4.14.154/drivers/usb/host/usb20/musb_core.c:2363: undefined reference to `usb_phy_context_restore'
arm-openwrt-linux-muslgnueabi-ld: target-arm_cortex-a7+neon-vfpv4_musl_eabi/linux-mediatek_mt7623/linux-4.14.154/drivers/usb/host/usb20/musb_core.c:2365: undefined reference to `usb_enable_clock'
arm-openwrt-linux-muslgnueabi-ld: drivers/usb/host/usb20/musb_core.o: in function `musb_stage0_irq':
target-arm_cortex-a7+neon-vfpv4_musl_eabi/linux-mediatek_mt7623/linux-4.14.154/drivers/usb/host/usb20/musb_core.c:733: undefined reference to `musb_session_restart'
arm-openwrt-linux-muslgnueabi-ld: target-arm_cortex-a7+neon-vfpv4_musl_eabi/linux-mediatek_mt7623/linux-4.14.154/drivers/usb/host/usb20/musb_core.c:765: undefined reference to `is_switch_charger'
arm-openwrt-linux-muslgnueabi-ld: drivers/usb/host/usb20/musb_gadget_ep0.o: in function `musb_g_ep0_irq':
target-arm_cortex-a7+neon-vfpv4_musl_eabi/linux-mediatek_mt7623/linux-4.14.154/drivers/usb/host/usb20/musb_gadget_ep0.c:784: undefined reference to `musb_sync_with_bat'
arm-openwrt-linux-muslgnueabi-ld: drivers/usb/host/usb20/musb_gadget_ep0.o: in function `forward_to_driver':
target-arm_cortex-a7+neon-vfpv4_musl_eabi/linux-mediatek_mt7623/linux-4.14.154/drivers/usb/host/usb20/musb_gadget_ep0.c:680: undefined reference to `musb_sync_with_bat'
arm-openwrt-linux-muslgnueabi-ld: drivers/usb/host/usb20/musb_gadget.o: in function `musb_gadget_pullup':
target-arm_cortex-a7+neon-vfpv4_musl_eabi/linux-mediatek_mt7623/linux-4.14.154/drivers/usb/host/usb20/musb_gadget.c:2305: undefined reference to `usb_cable_connected'
arm-openwrt-linux-muslgnueabi-ld: drivers/usb/host/usb20/musb_gadget.o: in function `musb_writeb':
target-arm_cortex-a7+neon-vfpv4_musl_eabi/linux-mediatek_mt7623/linux-4.14.154/./include/linux/musb/musb_io.h:137: undefined reference to `usb_enable_clock'
arm-openwrt-linux-muslgnueabi-ld: target-arm_cortex-a7+neon-vfpv4_musl_eabi/linux-mediatek_mt7623/linux-4.14.154/./include/linux/musb/musb_io.h:140: undefined reference to `usb_enable_clock'

try grepping for those functions in old kernel tree and check if they exist in newer tree, if they don't then that means you have much more work to do.
it's likely you simply forgot to feed some object file that has those functions, all the errors you get originate from 'ld' so the compilation succeeds, it's the linking stage you're missing some files at fails.

1 members found this post helpful.

Thank you for your reply...
Sorry for the late...

I tried what you suggested to me but i already have this function in my new kernel tree

./include/linux/musb/musb_io.h:42:extern bool usb_enable_clock(bool enable);
./include/linux/musb/musb_io.h:54: usb_enable_clock(true);
./include/linux/musb/musb_io.h:57: usb_enable_clock(false);
./include/linux/musb/musb_io.h:72: usb_enable_clock(true);
./include/linux/musb/musb_io.h:75: usb_enable_clock(false);
./include/linux/musb/musb_io.h:89: usb_enable_clock(true);
./include/linux/musb/musb_io.h:92: usb_enable_clock(false);
./include/linux/musb/musb_io.h:104: usb_enable_clock(true);
./include/linux/musb/musb_io.h:107: usb_enable_clock(false);
./include/linux/musb/musb_io.h:121: usb_enable_clock(true);
./include/linux/musb/musb_io.h:124: usb_enable_clock(false);
./include/linux/musb/musb_io.h:137: usb_enable_clock(true);
./include/linux/musb/musb_io.h:140: usb_enable_clock(false);
./include/linux/musb/mtk_musb.h:35:extern bool usb_enable_clock(bool enable);

I also faced this same issue sometime back. I would suggest you go and check the old kernel tree for those functions and start creating newer tree with same name.