Re: [helgaas-pci:for-linus 4/4] drivers/pci/controller/pci-hyperv.c:1486:9: error: implicit declaration of function 'hv_set_msi_entry_from_desc'

[Nathan Chancellor <nathan@xxxxxxxxxx>]

On Thu, Mar 31, 2022 at 06:43:32AM +0800, kernel test robot wrote:
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git for-linus
> head:   18146f25ac6695ce2ed09503de46dafd2b1f36a6
> commit: 18146f25ac6695ce2ed09503de46dafd2b1f36a6 [4/4] PCI: hv: Remove unused hv_set_msi_entry_from_desc()
> config: arm64-allyesconfig (https://download.01.org/0day-ci/archive/20220331/202203310629.C8KmndLW-lkp@xxxxxxxxx/config)
> compiler: aarch64-linux-gcc (GCC) 11.2.0
> reproduce (this is a W=1 build):
>         wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
>         chmod +x ~/bin/make.cross
>         # https://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git/commit/?id=18146f25ac6695ce2ed09503de46dafd2b1f36a6
>         git remote add helgaas-pci https://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git
>         git fetch --no-tags helgaas-pci for-linus
>         git checkout 18146f25ac6695ce2ed09503de46dafd2b1f36a6
>         # save the config file to linux build tree
>         mkdir build_dir
>         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=arm64 SHELL=/bin/bash
> 
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@xxxxxxxxx>
> 
> All errors (new ones prefixed by >>):
> 
>    drivers/pci/controller/pci-hyperv.c: In function 'hv_irq_unmask':
> >> drivers/pci/controller/pci-hyperv.c:1486:9: error: implicit declaration of function 'hv_set_msi_entry_from_desc' [-Werror=implicit-function-declaration]
>     1486 |         hv_set_msi_entry_from_desc(&params->int_entry.msi_entry, msi_desc);
>          |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
>    cc1: some warnings being treated as errors

18146f25ac66 ("PCI: hv: Remove unused hv_set_msi_entry_from_desc()")
does not have d06957d7a692 ("PCI: hv: Avoid the retarget interrupt
hypercall in irq_unmask() on ARM64") as a parent, since it is only in
mainline with no tag, whereas 18146f25ac66 is based on v5.17-rc7, which
does not have the problem that 18146f25ac66 addresses.

I think that rebasing the pending fixes on the 5.18 PCI changes would
properly resolve this.

Cheers,
Nathan