linux-kernel - RE: linux-next: build failure after merge of the pci tree

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Date:   Mon, 23 Oct 2023 09:36:21 +0000
From:   Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>
To:     Krzysztof Wilczyński <kw@...ux.com>
CC:     Stephen Rothwell <sfr@...b.auug.org.au>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Lorenzo Pieralisi <lpieralisi@...nel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>
Subject: RE: linux-next: build failure after merge of the pci tree

Hello Krzysztof,

> From: Krzysztof Wilczyński, Sent: Monday, October 23, 2023 4:35 PM
> 
> > > Hi all,
> > >
> > > After merging the pci tree, today's linux-next build (x86_64 allmodconfig)
> > > failed like this:
> > >
> > > ERROR: modpost: "dw_pcie_write_dbi2" [drivers/pci/controller/dwc/pcie-rcar-gen4.ko] undefined!
> [...]
> 
> > However, I completely forgot it...
> 
> That's OK.  Don't worry. :)
> 
> > https://lore.kernel.org/linux-pci/20230926122431.3974714-8-yoshihiro.shimoda.uh@renesas.com/
> >
> > I confirmed that the patch above can be applied on the latest pci.git / next branch.
> 
> I will take care of it.

Thank you very much for your support!

> > However, should I resend whole patches with the patch above as v26?
> 
> No.  There is no need to send another series.

I got it.

> Different question: aren't RCar systems based on Arm?

You're correct. R-Car systems based on Arm.

>  I wonder why this
> even built on a x86_64 - unless I am wrong about this.

This is because I added COMPILE_TEST to the Kconfig like below:

---
config PCIE_RCAR_GEN4_HOST
        tristate "Renesas R-Car Gen4 PCIe controller (host mode)"
        depends on ARCH_RENESAS || COMPILE_TEST
---

Best regards,
Yoshihiro Shimoda

> 	Krzysztof