[PATCH] pci: Add and use PCI_GENERIC_SETUP Kconfig entry

From: Palmer Dabbelt <palmer@dabbelt.com>
Date: 2017-06-26 20:27:56
Also in: linux-m68k
Subsystem: alpha port, arm port, arm64 port (aarch64 architecture), m68k architecture, mips, pci subsystem, sparc + ultrasparc (sparc/sparc64), superh, synopsys arc architecture, the rest · Maintainers: Richard Henderson, Matt Turner, Magnus Lindholm, Russell King, Catalin Marinas, Will Deacon, Geert Uytterhoeven, Thomas Bogendoerfer, Bjorn Helgaas, "David S. Miller", Andreas Larsson, Yoshinori Sato, Rich Felker, John Paul Adrian Glaubitz, Vineet Gupta, Linus Torvalds

We wanted to add RISC-V to the list of architectures that used the
generic PCI setup-irq.o inside the Makefile and it was suggested that
instead we define a Kconfig entry and use that.

I've done very minimal testing on this: I just checked to see that
an aarch64 defconfig still build setup-irq.o with the patch applied.
The intention is that this patch doesn't change the behavior of any
build.

Signed-off-by: Palmer Dabbelt <palmer@dabbelt.com>
Reviewed-by: James Hogan <redacted>
Acked-by: Russell King <redacted>
Acked-by: Richard Henderson <redacted>
Acked-by: Vineet Gupta <redacted>   [arch/arc]
---
 arch/alpha/Kconfig     |  1 +
 arch/arc/Kconfig       |  1 +
 arch/arm/Kconfig       |  1 +
 arch/arm64/Kconfig     |  1 +
 arch/m68k/Kconfig.bus  |  1 +
 arch/mips/Kconfig      |  1 +
 arch/sh/Kconfig        |  1 +
 arch/sparc/Kconfig     |  1 +
 arch/tile/Kconfig      |  1 +
 arch/unicore32/Kconfig |  1 +
 drivers/pci/Kconfig    |  3 +++
 drivers/pci/Makefile   | 11 +----------
 12 files changed, 14 insertions(+), 10 deletions(-)

diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig
index 0e49d39ea74a..30f4e711f681 100644
--- a/arch/alpha/Kconfig
+++ b/arch/alpha/Kconfig

@@ -26,6 +26,7 @@ config ALPHA
 	select ODD_RT_SIGACTION
 	select OLD_SIGSUSPEND
 	select CPU_NO_EFFICIENT_FFS if !ALPHA_EV67
+	select PCI_GENERIC_SETUP
 	help
 	  The Alpha is a 64-bit general-purpose processor designed and
 	  marketed by the Digital Equipment Corporation of blessed memory,

diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig
index a5459698f0ee..dd1f64858118 100644
--- a/arch/arc/Kconfig
+++ b/arch/arc/Kconfig

@@ -44,6 +44,7 @@ config ARC
 	select HAVE_GENERIC_DMA_COHERENT
 	select HAVE_KERNEL_GZIP
 	select HAVE_KERNEL_LZMA
+	select PCI_GENERIC_SETUP
 
 config MIGHT_HAVE_PCI
 	bool

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 4c1a35f15838..4f910c4c37b2 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig

@@ -93,6 +93,7 @@ config ARM
 	select OF_RESERVED_MEM if OF
 	select OLD_SIGACTION
 	select OLD_SIGSUSPEND3
+	select PCI_GENERIC_SETUP
 	select PERF_USE_VMALLOC
 	select RTC_LIB
 	select SYS_SUPPORTS_APM_EMULATION

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index b2024db225a9..02d4676cb00e 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig

@@ -110,6 +110,7 @@ config ARM64
 	select OF_EARLY_FLATTREE
 	select OF_RESERVED_MEM
 	select PCI_ECAM if ACPI
+	select PCI_GENERIC_SETUP
 	select POWER_RESET
 	select POWER_SUPPLY
 	select SPARSE_IRQ

diff --git a/arch/m68k/Kconfig.bus b/arch/m68k/Kconfig.bus
index 675b087198f6..bcab783f0487 100644
--- a/arch/m68k/Kconfig.bus
+++ b/arch/m68k/Kconfig.bus

@@ -61,6 +61,7 @@ config GENERIC_ISA_DMA
 config PCI
 	bool "PCI support"
 	depends on M54xx
+	select PCI_GENERIC_SETUP
 	help
 	  Enable the PCI bus. Support for the PCI bus hardware built into the
 	  ColdFire 547x and 548x processors.

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 2828ecde133d..474a7c710686 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig

@@ -70,6 +70,7 @@ config MIPS
 	select HAVE_EXIT_THREAD
 	select HAVE_REGS_AND_STACK_ACCESS_API
 	select HAVE_COPY_THREAD_TLS
+	select PCI_GENERIC_SETUP
 
 menu "Machine selection"

diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index ee086958b2b2..90a98ac526fb 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig

@@ -48,6 +48,7 @@ config SUPERH
 	select HAVE_ARCH_AUDITSYSCALL
 	select HAVE_FUTEX_CMPXCHG if FUTEX
 	select HAVE_NMI
+	select PCI_GENERIC_SETUP
 	help
 	  The SuperH is a RISC processor targeted for use in embedded systems
 	  and consumer electronics; it was also used in the Sega Dreamcast

diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index 5639c9fe5b55..24cea64104bd 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig

@@ -424,6 +424,7 @@ config SPARC_LEON
 	depends on SPARC32
 	select USB_EHCI_BIG_ENDIAN_MMIO
 	select USB_EHCI_BIG_ENDIAN_DESC
+	select PCI_GENERIC_SETUP
 	---help---
 	  If you say Y here if you are running on a SPARC-LEON processor.
 	  The LEON processor is a synthesizable VHDL model of the

diff --git a/arch/tile/Kconfig b/arch/tile/Kconfig
index 4583c0320059..451000db8c62 100644
--- a/arch/tile/Kconfig
+++ b/arch/tile/Kconfig

@@ -28,6 +28,7 @@ config TILE
 	select HAVE_PERF_EVENTS
 	select HAVE_SYSCALL_TRACEPOINTS
 	select MODULES_USE_ELF_RELA
+	select PCI_GENERIC_SETUP
 	select SYSCTL_EXCEPTION_TRACE
 	select SYS_HYPERVISOR
 	select USER_STACKTRACE_SUPPORT

diff --git a/arch/unicore32/Kconfig b/arch/unicore32/Kconfig
index 0769066929c6..162a7d3def0c 100644
--- a/arch/unicore32/Kconfig
+++ b/arch/unicore32/Kconfig

@@ -18,6 +18,7 @@ config UNICORE32
 	select ARCH_WANT_FRAME_POINTERS
 	select GENERIC_IOMAP
 	select MODULES_USE_ELF_REL
+	select PCI_GENERIC_SETUP
 	help
 	  UniCore-32 is 32-bit Instruction Set Architecture,
 	  including a series of low-power-consumption RISC chip

diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig
index e0cacb7b8563..72a1c4c65926 100644
--- a/drivers/pci/Kconfig
+++ b/drivers/pci/Kconfig

@@ -131,6 +131,9 @@ config PCI_HYPERV
           The PCI device frontend driver allows the kernel to import arbitrary
           PCI devices from a PCI backend to support PCI driver domains.
 
+config PCI_GENERIC_SETUP
+	bool
+
 source "drivers/pci/hotplug/Kconfig"
 source "drivers/pci/dwc/Kconfig"
 source "drivers/pci/host/Kconfig"

diff --git a/drivers/pci/Makefile b/drivers/pci/Makefile
index 462c1f5f5546..26f4710c88ec 100644
--- a/drivers/pci/Makefile
+++ b/drivers/pci/Makefile

@@ -31,16 +31,7 @@ obj-$(CONFIG_PCI_IOV) += iov.o
 #
 # Some architectures use the generic PCI setup functions
 #
-obj-$(CONFIG_ALPHA) += setup-irq.o
-obj-$(CONFIG_ARC) += setup-irq.o
-obj-$(CONFIG_ARM) += setup-irq.o
-obj-$(CONFIG_ARM64) += setup-irq.o
-obj-$(CONFIG_UNICORE32) += setup-irq.o
-obj-$(CONFIG_SUPERH) += setup-irq.o
-obj-$(CONFIG_MIPS) += setup-irq.o
-obj-$(CONFIG_TILE) += setup-irq.o
-obj-$(CONFIG_SPARC_LEON) += setup-irq.o
-obj-$(CONFIG_M68K) += setup-irq.o
+obj-$(CONFIG_PCI_GENERIC_SETUP) += setup-irq.o
 
 #
 # ACPI Related PCI FW Functions

-- 
2.13.0

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