Re: [pci:controller/rockchip] BUILD SUCCESS 592aac418ebdf451fe9b146bc2ca6dfc96921af0

[Bjorn Helgaas <helgaas@kernel.org>]

On Mon, Nov 18, 2024 at 12:01:12AM +0800, kernel test robot wrote:
> tree/branch: https://git.kernel.org/pub/scm/linux/kernel/git/pci/pci.git controller/rockchip
> branch HEAD: 592aac418ebdf451fe9b146bc2ca6dfc96921af0  PCI: rockchip-ep: Handle PERST# signal in endpoint mode

> x86_64                           allyesconfig    clang-19

How can I reproduce this build?  Do you have a packaged clang-19
toolchain?

The x86_64 allyesconfig build succeeded for the robot, but when I
build on x86_64 with gcc-11.4.0, I get an error:

  $ gcc -v
  gcc version 11.4.0 (Ubuntu 11.4.0-1ubuntu1~22.04)
  $ git checkout 592aac418ebd
  $ make allyesconfig
  $ make drivers/pci/controller/pcie-rockchip-ep.o
    CC      drivers/pci/controller/pcie-rockchip-ep.o
  drivers/pci/controller/pcie-rockchip-ep.c:640:9: error: implicit declaration of function ‘irq_set_irq_type’

irq_set_irq_type() is declared in <linux/irq.h>.  On arm64, where this
driver is used, <linux/irq.h> is included via this path:

  linux/pci.h
    linux/interrupt.h
      linux/hardirq.h
	arch/arm64/include/asm/hardirq.h
	  asm-generic/hardirq.h
	    linux/irq.h

but on x86, arch/x86/include/asm/hardirq.h does not include
asm-generic/hardirq.h and therefore doesn't include <linux/irq.h>.

I'm confused about why the robot reported a successful build with
clang-19.  It seems like that should have the same problem I saw with
gcc, so I'd like to try it manually.

Bjorn