Re: [next] [arm64] allmodconfig build failed - xhci-plat.c:427: undefined reference to `onboard_hub_destroy_pdevs'

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On Thu, Jun 17, 2021 at 03:45:57PM +0200, Greg Kroah-Hartman wrote:
> On Thu, Jun 17, 2021 at 07:09:15PM +0530, Naresh Kamboju wrote:
> > The arm64 allmodconfig build failed on Linux next 20210617 tag due to
> > the commit,
> > 
> > c950686b382d ("usb: host: xhci-plat: Create platform device for
> > onboard hubs in probe()")
> > 
> > build error:
> > ------------
> > aarch64-linux-gnu-ld: drivers/usb/host/xhci-plat.o: in function
> > `xhci_plat_remove':
> > drivers/usb/host/xhci-plat.c:427: undefined reference to
> > `onboard_hub_destroy_pdevs'
> > drivers/usb/host/xhci-plat.c:427:(.text+0x82c): relocation truncated
> > to fit: R_AARCH64_CALL26 against undefined symbol
> > `onboard_hub_destroy_pdevs'
> > aarch64-linux-gnu-ld: drivers/usb/host/xhci-plat.o: in function
> > `xhci_plat_probe':
> > drivers/usb/host/xhci-plat.c:379: undefined reference to
> > `onboard_hub_create_pdevs'
> > drivers/usb/host/xhci-plat.c:379:(.text+0x131c): relocation truncated
> > to fit: R_AARCH64_CALL26 against undefined symbol
> > `onboard_hub_create_pdevs'
> > make[1]: *** [Makefile:1252: vmlinux] Error 1
> > make[1]: Target '__all' not remade because of errors.
> > make: *** [Makefile:222: __sub-make] Error 2
> > make: Target '__all' not remade because of errors.
> 
> Matthias, this is due to your patch, yet-another config option mis-match
> somewhere. Can you please fix it up?

I can repro this with:

make -j 16 ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- \
  KCONFIG_ALLCONFIG=arch/arm64/configs/defconfig allmodconfig kernel modules

This results in:

CONFIG_USB_XHCI_PLATFORM=y
CONFIG_USB_ONBOARD_HUB=m

The following Kconfig dependency was supposed to prevent this scenario:

config USB_XHCI_PLATFORM
        depends on USB_ONBOARD_HUB || !USB_ONBOARD_HUB

But apparently this isn't the case.

With the above allmodconfig command the following warning is emitted:

WARNING: unmet direct dependencies detected for USB_XHCI_PLATFORM
  Depends on [m]: USB_SUPPORT [=y] && USB [=y] && USB_XHCI_HCD [=y] && (USB_ONBOARD_HUB [=m] || !USB_ONBOARD_HUB [=m])

I read through kconfig-language.rst multiple times, but it's still not
clear to me how to specify this dependency properly.

Masahiro/Greg, do you have any pointers?



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