Re: [v4] PCI: improve host drivers compile test coverage

[Guenter Roeck <linux@roeck-us.net>]

On Thu, Apr 05, 2018 at 02:31:54PM -0500, Rob Herring wrote:
> Add COMPILE_TEST on driver config options with it. Some ARM drivers
> still have arch dependencies, so we have to keep those dependent on ARM.
> 
> Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
> Cc: Bjorn Helgaas <bhelgaas@google.com>
> Cc: linux-pci@vger.kernel.org
> Signed-off-by: Rob Herring <robh@kernel.org>

This patch has the undesirable side effect that it selects PCI_DOMAINS for
sparc32:allmodconfig, which in turn results in

drivers/ata/pata_ali.c: In function 'ali_init_chipset':
drivers/ata/pata_ali.c:469:38: error:
	implicit declaration of function 'pci_domain_nr'; did you mean 'pci_iomap_wc'?

Unfortunately, 37bd62d224c82 ("PCI: Enable PCI_DOMAINS along with generic
PCI host controller") has pretty much the same result. No idea how to fix
the problem, so I won't even try.

Guenter

> ---
> v4: Drop iProc hunks
> 
>  drivers/pci/dwc/Kconfig  | 24 ++++++++++++------------
>  drivers/pci/host/Kconfig | 31 ++++++++++++++-----------------
>  2 files changed, 26 insertions(+), 29 deletions(-)
> 
> diff --git a/drivers/pci/dwc/Kconfig b/drivers/pci/dwc/Kconfig
> index 8c1a5167fb5b..2902544f5834 100644
> --- a/drivers/pci/dwc/Kconfig
> +++ b/drivers/pci/dwc/Kconfig
> @@ -64,21 +64,21 @@ config PCIE_DW_PLAT
>  
>  config PCI_EXYNOS
>  	bool "Samsung Exynos PCIe controller"
> -	depends on SOC_EXYNOS5440
> +	depends on SOC_EXYNOS5440 || COMPILE_TEST
>  	depends on PCI_MSI_IRQ_DOMAIN
>  	select PCIEPORTBUS
>  	select PCIE_DW_HOST
>  
>  config PCI_IMX6
>  	bool "Freescale i.MX6 PCIe controller"
> -	depends on SOC_IMX6Q
> +	depends on SOC_IMX6Q || (ARM && COMPILE_TEST)
>  	depends on PCI_MSI_IRQ_DOMAIN
>  	select PCIEPORTBUS
>  	select PCIE_DW_HOST
>  
>  config PCIE_SPEAR13XX
>  	bool "STMicroelectronics SPEAr PCIe controller"
> -	depends on ARCH_SPEAR13XX
> +	depends on ARCH_SPEAR13XX || COMPILE_TEST
>  	depends on PCI_MSI_IRQ_DOMAIN
>  	select PCIEPORTBUS
>  	select PCIE_DW_HOST
> @@ -87,7 +87,7 @@ config PCIE_SPEAR13XX
>  
>  config PCI_KEYSTONE
>  	bool "TI Keystone PCIe controller"
> -	depends on ARCH_KEYSTONE
> +	depends on ARCH_KEYSTONE || (ARM && COMPILE_TEST)
>  	depends on PCI_MSI_IRQ_DOMAIN
>  	select PCIEPORTBUS
>  	select PCIE_DW_HOST
> @@ -99,7 +99,7 @@ config PCI_KEYSTONE
>  
>  config PCI_LAYERSCAPE
>  	bool "Freescale Layerscape PCIe controller"
> -	depends on OF && (ARM || ARCH_LAYERSCAPE)
> +	depends on OF && (ARM || ARCH_LAYERSCAPE || COMPILE_TEST)
>  	depends on PCI_MSI_IRQ_DOMAIN
>  	select MFD_SYSCON
>  	select PCIE_DW_HOST
> @@ -107,7 +107,7 @@ config PCI_LAYERSCAPE
>  	  Say Y here if you want PCIe controller support on Layerscape SoCs.
>  
>  config PCI_HISI
> -	depends on OF && ARM64
> +	depends on OF && (ARM64 || COMPILE_TEST)
>  	bool "HiSilicon Hip05 and Hip06 SoCs PCIe controllers"
>  	depends on PCI_MSI_IRQ_DOMAIN
>  	select PCIEPORTBUS
> @@ -119,7 +119,7 @@ config PCI_HISI
>  
>  config PCIE_QCOM
>  	bool "Qualcomm PCIe controller"
> -	depends on ARCH_QCOM && OF
> +	depends on OF && (ARCH_QCOM || COMPILE_TEST)
>  	depends on PCI_MSI_IRQ_DOMAIN
>  	select PCIEPORTBUS
>  	select PCIE_DW_HOST
> @@ -130,7 +130,7 @@ config PCIE_QCOM
>  
>  config PCIE_ARMADA_8K
>  	bool "Marvell Armada-8K PCIe controller"
> -	depends on ARCH_MVEBU
> +	depends on ARCH_MVEBU || COMPILE_TEST
>  	depends on PCI_MSI_IRQ_DOMAIN
>  	select PCIEPORTBUS
>  	select PCIE_DW_HOST
> @@ -145,7 +145,7 @@ config PCIE_ARTPEC6
>  
>  config PCIE_ARTPEC6_HOST
>  	bool "Axis ARTPEC-6 PCIe controller Host Mode"
> -	depends on MACH_ARTPEC6
> +	depends on MACH_ARTPEC6 || COMPILE_TEST
>  	depends on PCI_MSI_IRQ_DOMAIN
>  	select PCIEPORTBUS
>  	select PCIE_DW_HOST
> @@ -156,7 +156,7 @@ config PCIE_ARTPEC6_HOST
>  
>  config PCIE_ARTPEC6_EP
>  	bool "Axis ARTPEC-6 PCIe controller Endpoint Mode"
> -	depends on MACH_ARTPEC6
> +	depends on MACH_ARTPEC6 || COMPILE_TEST
>  	depends on PCI_ENDPOINT
>  	select PCIE_DW_EP
>  	select PCIE_ARTPEC6
> @@ -165,7 +165,7 @@ config PCIE_ARTPEC6_EP
>  	  endpoint mode. This uses the DesignWare core.
>  
>  config PCIE_KIRIN
> -	depends on OF && ARM64
> +	depends on OF && (ARM64 || COMPILE_TEST)
>  	bool "HiSilicon Kirin series SoCs PCIe controllers"
>  	depends on PCI_MSI_IRQ_DOMAIN
>  	select PCIEPORTBUS
> @@ -176,7 +176,7 @@ config PCIE_KIRIN
>  
>  config PCIE_HISI_STB
>  	bool "HiSilicon STB SoCs PCIe controllers"
> -	depends on ARCH_HISI
> +	depends on ARCH_HISI || COMPILE_TEST
>  	depends on PCI_MSI_IRQ_DOMAIN
>  	select PCIEPORTBUS
>  	select PCIE_DW_HOST
> diff --git a/drivers/pci/host/Kconfig b/drivers/pci/host/Kconfig
> index 0d0177ce436c..3d180b594ff2 100644
> --- a/drivers/pci/host/Kconfig
> +++ b/drivers/pci/host/Kconfig
> @@ -5,13 +5,13 @@ menu "PCI host controller drivers"
>  
>  config PCI_MVEBU
>  	bool "Marvell EBU PCIe controller"
> -	depends on ARCH_MVEBU || ARCH_DOVE
> +	depends on ARCH_MVEBU || ARCH_DOVE || COMPILE_TEST
>  	depends on ARM
>  	depends on OF
>  
>  config PCI_AARDVARK
>  	bool "Aardvark PCIe controller"
> -	depends on ARCH_MVEBU && ARM64
> +	depends on (ARCH_MVEBU && ARM64) || COMPILE_TEST
>  	depends on OF
>  	depends on PCI_MSI_IRQ_DOMAIN
>  	help
> @@ -21,7 +21,7 @@ config PCI_AARDVARK
>  
>  config PCIE_XILINX_NWL
>  	bool "NWL PCIe Core"
> -	depends on ARCH_ZYNQMP
> +	depends on ARCH_ZYNQMP || COMPILE_TEST
>  	depends on PCI_MSI_IRQ_DOMAIN
>  	help
>  	 Say 'Y' here if you want kernel support for Xilinx
> @@ -32,12 +32,11 @@ config PCIE_XILINX_NWL
>  config PCI_FTPCI100
>  	bool "Faraday Technology FTPCI100 PCI controller"
>  	depends on OF
> -	depends on ARM
>  	default ARCH_GEMINI
>  
>  config PCI_TEGRA
>  	bool "NVIDIA Tegra PCIe controller"
> -	depends on ARCH_TEGRA
> +	depends on ARCH_TEGRA || COMPILE_TEST
>  	depends on PCI_MSI_IRQ_DOMAIN
>  	help
>  	  Say Y here if you want support for the PCIe host controller found
> @@ -45,8 +44,8 @@ config PCI_TEGRA
>  
>  config PCI_RCAR_GEN2
>  	bool "Renesas R-Car Gen2 Internal PCI controller"
> -	depends on ARM
>  	depends on ARCH_RENESAS || COMPILE_TEST
> +	depends on ARM
>  	help
>  	  Say Y here if you want internal PCI support on R-Car Gen2 SoC.
>  	  There are 3 internal PCI controllers available with a single
> @@ -54,7 +53,7 @@ config PCI_RCAR_GEN2
>  
>  config PCIE_RCAR
>  	bool "Renesas R-Car PCIe controller"
> -	depends on ARCH_RENESAS || (ARM && COMPILE_TEST)
> +	depends on ARCH_RENESAS || COMPILE_TEST
>  	depends on PCI_MSI_IRQ_DOMAIN
>  	help
>  	  Say Y here if you want PCIe controller support on R-Car SoCs.
> @@ -65,7 +64,7 @@ config PCI_HOST_COMMON
>  
>  config PCI_HOST_GENERIC
>  	bool "Generic PCI host controller"
> -	depends on (ARM || ARM64) && OF
> +	depends on OF
>  	select PCI_HOST_COMMON
>  	select IRQ_DOMAIN
>  	help
> @@ -74,14 +73,14 @@ config PCI_HOST_GENERIC
>  
>  config PCIE_XILINX
>  	bool "Xilinx AXI PCIe host bridge support"
> -	depends on ARCH_ZYNQ || MICROBLAZE || (MIPS && PCI_DRIVERS_GENERIC)
> +	depends on ARCH_ZYNQ || MICROBLAZE || (MIPS && PCI_DRIVERS_GENERIC) || COMPILE_TEST
>  	help
>  	  Say 'Y' here if you want kernel to support the Xilinx AXI PCIe
>  	  Host Bridge driver.
>  
>  config PCI_XGENE
>  	bool "X-Gene PCIe controller"
> -	depends on ARM64
> +	depends on ARM64 || COMPILE_TEST
>  	depends on OF || (ACPI && PCI_QUIRKS)
>  	select PCIEPORTBUS
>  	help
> @@ -101,7 +100,7 @@ config PCI_XGENE_MSI
>  config PCI_V3_SEMI
>  	bool "V3 Semiconductor PCI controller"
>  	depends on OF
> -	depends on ARM
> +	depends on ARM || COMPILE_TEST
>  	default ARCH_INTEGRATOR_AP
>  
>  config PCI_VERSATILE
> @@ -147,8 +146,7 @@ config PCIE_IPROC_MSI
>  
>  config PCIE_ALTERA
>  	bool "Altera PCIe controller"
> -	depends on ARM || NIOS2
> -	depends on OF_PCI
> +	depends on ARM || NIOS2 || COMPILE_TEST
>  	select PCI_DOMAINS
>  	help
>  	  Say Y here if you want to enable PCIe controller support on Altera
> @@ -164,7 +162,7 @@ config PCIE_ALTERA_MSI
>  
>  config PCI_HOST_THUNDER_PEM
>  	bool "Cavium Thunder PCIe controller to off-chip devices"
> -	depends on ARM64
> +	depends on ARM64 || COMPILE_TEST
>  	depends on OF || (ACPI && PCI_QUIRKS)
>  	select PCI_HOST_COMMON
>  	help
> @@ -172,7 +170,7 @@ config PCI_HOST_THUNDER_PEM
>  
>  config PCI_HOST_THUNDER_ECAM
>  	bool "Cavium Thunder ECAM controller to on-chip devices on pass-1.x silicon"
> -	depends on ARM64
> +	depends on ARM64 || COMPILE_TEST
>  	depends on OF || (ACPI && PCI_QUIRKS)
>  	select PCI_HOST_COMMON
>  	help
> @@ -191,9 +189,8 @@ config PCIE_ROCKCHIP
>  
>  config PCIE_MEDIATEK
>  	bool "MediaTek PCIe controller"
> -	depends on (ARM || ARM64) && (ARCH_MEDIATEK || COMPILE_TEST)
> +	depends on ARCH_MEDIATEK || COMPILE_TEST
>  	depends on OF
> -	depends on PCI
>  	select PCIEPORTBUS
>  	help
>  	  Say Y here if you want to enable PCIe controller support on