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PCI/MSI: Get rid of PCI_MSI_IRQ_DOMAIN

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What a zoo:

     PCI_MSI
	select GENERIC_MSI_IRQ

     PCI_MSI_IRQ_DOMAIN
     	def_bool y
	depends on PCI_MSI
	select GENERIC_MSI_IRQ_DOMAIN

Ergo PCI_MSI enables PCI_MSI_IRQ_DOMAIN which in turn selects
GENERIC_MSI_IRQ_DOMAIN. So all the dependencies on PCI_MSI_IRQ_DOMAIN are
just an indirection to PCI_MSI.

Match the reality and just admit that PCI_MSI requires
GENERIC_MSI_IRQ_DOMAIN.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://lore.kernel.org/r/20221111122014.467556921@linutronix.de
This commit is contained in:
Thomas Gleixner 2022-11-11 14:54:38 +01:00
parent b2bdda205c
commit a474d3fbe2
11 changed files with 58 additions and 75 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
arch/um/drivers/Kconfig
View File

@ -381,7 +381,6 @@ config UML_PCI_OVER_VIRTIO
select UML_IOMEM_EMULATION
select UML_DMA_EMULATION
select PCI_MSI
select PCI_MSI_IRQ_DOMAIN
select PCI_LOCKLESS_CONFIG
config UML_PCI_OVER_VIRTIO_DEVICE_ID

2
arch/um/include/asm/pci.h
View File

@ -7,7 +7,7 @@
/* Generic PCI */
#include <asm-generic/pci.h>
#ifdef CONFIG_PCI_MSI_IRQ_DOMAIN
#ifdef CONFIG_PCI_MSI
/*
* This is a bit of an annoying hack, and it assumes we only have
* the virt-pci (if anything). Which is true, but still.

1
arch/x86/Kconfig
View File

@ -1109,7 +1109,6 @@ config X86_LOCAL_APIC
def_bool y
depends on X86_64 || SMP || X86_32_NON_STANDARD || X86_UP_APIC || PCI_MSI
select IRQ_DOMAIN_HIERARCHY
select PCI_MSI_IRQ_DOMAIN if PCI_MSI
config X86_IO_APIC
def_bool y

4
arch/x86/include/asm/pci.h
View File

@ -21,7 +21,7 @@ struct pci_sysdata {
#ifdef CONFIG_X86_64
void *iommu; /* IOMMU private data */
#endif
#ifdef CONFIG_PCI_MSI_IRQ_DOMAIN
#ifdef CONFIG_PCI_MSI
void *fwnode; /* IRQ domain for MSI assignment */
#endif
#if IS_ENABLED(CONFIG_VMD)
@ -52,7 +52,7 @@ static inline int pci_proc_domain(struct pci_bus *bus)
}
#endif
#ifdef CONFIG_PCI_MSI_IRQ_DOMAIN
#ifdef CONFIG_PCI_MSI
static inline void *_pci_root_bus_fwnode(struct pci_bus *bus)
{
return to_pci_sysdata(bus)->fwnode;

8
drivers/pci/Kconfig
View File

@ -38,6 +38,7 @@ source "drivers/pci/pcie/Kconfig"
config PCI_MSI
bool "Message Signaled Interrupts (MSI and MSI-X)"
select GENERIC_MSI_IRQ_DOMAIN
select GENERIC_MSI_IRQ
help
This allows device drivers to enable MSI (Message Signaled
@ -51,11 +52,6 @@ config PCI_MSI
If you don't know what to do here, say Y.
config PCI_MSI_IRQ_DOMAIN
def_bool y
depends on PCI_MSI
select GENERIC_MSI_IRQ_DOMAIN
config PCI_MSI_ARCH_FALLBACKS
bool
@ -192,7 +188,7 @@ config PCI_LABEL
config PCI_HYPERV
tristate "Hyper-V PCI Frontend"
depends on ((X86 && X86_64) || ARM64) && HYPERV && PCI_MSI && PCI_MSI_IRQ_DOMAIN && SYSFS
depends on ((X86 && X86_64) || ARM64) && HYPERV && PCI_MSI && SYSFS
select PCI_HYPERV_INTERFACE
help
The PCI device frontend driver allows the kernel to import arbitrary

30
drivers/pci/controller/Kconfig
View File

@ -19,7 +19,7 @@ config PCI_AARDVARK
tristate "Aardvark PCIe controller"
depends on (ARCH_MVEBU && ARM64) || COMPILE_TEST
depends on OF
depends on PCI_MSI_IRQ_DOMAIN
depends on PCI_MSI
select PCI_BRIDGE_EMUL
help
Add support for Aardvark 64bit PCIe Host Controller. This
@ -29,7 +29,7 @@ config PCI_AARDVARK
config PCIE_XILINX_NWL
bool "NWL PCIe Core"
depends on ARCH_ZYNQMP || COMPILE_TEST
depends on PCI_MSI_IRQ_DOMAIN
depends on PCI_MSI
help
Say 'Y' here if you want kernel support for Xilinx
NWL PCIe controller. The controller can act as Root Port
@ -53,7 +53,7 @@ config PCI_IXP4XX
config PCI_TEGRA
bool "NVIDIA Tegra PCIe controller"
depends on ARCH_TEGRA || COMPILE_TEST
depends on PCI_MSI_IRQ_DOMAIN
depends on PCI_MSI
help
Say Y here if you want support for the PCIe host controller found
on NVIDIA Tegra SoCs.
@ -70,7 +70,7 @@ config PCI_RCAR_GEN2
config PCIE_RCAR_HOST
bool "Renesas R-Car PCIe host controller"
depends on ARCH_RENESAS || COMPILE_TEST
depends on PCI_MSI_IRQ_DOMAIN
depends on PCI_MSI
help
Say Y here if you want PCIe controller support on R-Car SoCs in host
mode.
@ -99,7 +99,7 @@ config PCI_HOST_GENERIC
config PCIE_XILINX
bool "Xilinx AXI PCIe host bridge support"
depends on OF || COMPILE_TEST
depends on PCI_MSI_IRQ_DOMAIN
depends on PCI_MSI
help
Say 'Y' here if you want kernel to support the Xilinx AXI PCIe
Host Bridge driver.
@ -124,7 +124,7 @@ config PCI_XGENE
config PCI_XGENE_MSI
bool "X-Gene v1 PCIe MSI feature"
depends on PCI_XGENE
depends on PCI_MSI_IRQ_DOMAIN
depends on PCI_MSI
default y
help
Say Y here if you want PCIe MSI support for the APM X-Gene v1 SoC.
@ -170,7 +170,7 @@ config PCIE_IPROC_BCMA
config PCIE_IPROC_MSI
bool "Broadcom iProc PCIe MSI support"
depends on PCIE_IPROC_PLATFORM || PCIE_IPROC_BCMA
depends on PCI_MSI_IRQ_DOMAIN
depends on PCI_MSI
default ARCH_BCM_IPROC
help
Say Y here if you want to enable MSI support for Broadcom's iProc
@ -186,7 +186,7 @@ config PCIE_ALTERA
config PCIE_ALTERA_MSI
tristate "Altera PCIe MSI feature"
depends on PCIE_ALTERA
depends on PCI_MSI_IRQ_DOMAIN
depends on PCI_MSI
help
Say Y here if you want PCIe MSI support for the Altera FPGA.
This MSI driver supports Altera MSI to GIC controller IP.
@ -215,7 +215,7 @@ config PCIE_ROCKCHIP_HOST
tristate "Rockchip PCIe host controller"
depends on ARCH_ROCKCHIP || COMPILE_TEST
depends on OF
depends on PCI_MSI_IRQ_DOMAIN
depends on PCI_MSI
select MFD_SYSCON
select PCIE_ROCKCHIP
help
@ -239,7 +239,7 @@ config PCIE_MEDIATEK
tristate "MediaTek PCIe controller"
depends on ARCH_AIROHA || ARCH_MEDIATEK || COMPILE_TEST
depends on OF
depends on PCI_MSI_IRQ_DOMAIN
depends on PCI_MSI
help
Say Y here if you want to enable PCIe controller support on
MediaTek SoCs.
@ -247,7 +247,7 @@ config PCIE_MEDIATEK
config PCIE_MEDIATEK_GEN3
tristate "MediaTek Gen3 PCIe controller"
depends on ARCH_MEDIATEK || COMPILE_TEST
depends on PCI_MSI_IRQ_DOMAIN
depends on PCI_MSI
help
Adds support for PCIe Gen3 MAC controller for MediaTek SoCs.
This PCIe controller is compatible with Gen3, Gen2 and Gen1 speed,
@ -277,7 +277,7 @@ config PCIE_BRCMSTB
depends on ARCH_BRCMSTB || ARCH_BCM2835 || ARCH_BCMBCA || \
BMIPS_GENERIC || COMPILE_TEST
depends on OF
depends on PCI_MSI_IRQ_DOMAIN
depends on PCI_MSI
default ARCH_BRCMSTB || BMIPS_GENERIC
help
Say Y here to enable PCIe host controller support for
@ -285,7 +285,7 @@ config PCIE_BRCMSTB
config PCI_HYPERV_INTERFACE
tristate "Hyper-V PCI Interface"
depends on ((X86 && X86_64) || ARM64) && HYPERV && PCI_MSI && PCI_MSI_IRQ_DOMAIN
depends on ((X86 && X86_64) || ARM64) && HYPERV && PCI_MSI && PCI_MSI
help
The Hyper-V PCI Interface is a helper driver allows other drivers to
have a common interface with the Hyper-V PCI frontend driver.
@ -303,8 +303,6 @@ config PCI_LOONGSON
config PCIE_MICROCHIP_HOST
bool "Microchip AXI PCIe host bridge support"
depends on PCI_MSI && OF
select PCI_MSI_IRQ_DOMAIN
select GENERIC_MSI_IRQ_DOMAIN
select PCI_HOST_COMMON
help
Say Y here if you want kernel to support the Microchip AXI PCIe
@ -326,7 +324,7 @@ config PCIE_APPLE
tristate "Apple PCIe controller"
depends on ARCH_APPLE || COMPILE_TEST
depends on OF
depends on PCI_MSI_IRQ_DOMAIN
depends on PCI_MSI
select PCI_HOST_COMMON
help
Say Y here if you want to enable PCIe controller support on Apple

48
drivers/pci/controller/dwc/Kconfig
View File

@ -21,7 +21,7 @@ config PCI_DRA7XX_HOST
tristate "TI DRA7xx PCIe controller Host Mode"
depends on SOC_DRA7XX || COMPILE_TEST
depends on OF && HAS_IOMEM && TI_PIPE3
depends on PCI_MSI_IRQ_DOMAIN
depends on PCI_MSI
select PCIE_DW_HOST
select PCI_DRA7XX
default y if SOC_DRA7XX
@ -53,7 +53,7 @@ config PCIE_DW_PLAT
config PCIE_DW_PLAT_HOST
bool "Platform bus based DesignWare PCIe Controller - Host mode"
depends on PCI_MSI_IRQ_DOMAIN
depends on PCI_MSI
select PCIE_DW_HOST
select PCIE_DW_PLAT
help
@ -67,7 +67,7 @@ config PCIE_DW_PLAT_HOST
config PCIE_DW_PLAT_EP
bool "Platform bus based DesignWare PCIe Controller - Endpoint mode"
depends on PCI && PCI_MSI_IRQ_DOMAIN
depends on PCI && PCI_MSI
depends on PCI_ENDPOINT
select PCIE_DW_EP
select PCIE_DW_PLAT
@ -83,7 +83,7 @@ config PCIE_DW_PLAT_EP
config PCI_EXYNOS
tristate "Samsung Exynos PCIe controller"
depends on ARCH_EXYNOS || COMPILE_TEST
depends on PCI_MSI_IRQ_DOMAIN
depends on PCI_MSI
select PCIE_DW_HOST
help
Enables support for the PCIe controller in the Samsung Exynos SoCs
@ -94,13 +94,13 @@ config PCI_EXYNOS
config PCI_IMX6
bool "Freescale i.MX6/7/8 PCIe controller"
depends on ARCH_MXC || COMPILE_TEST
depends on PCI_MSI_IRQ_DOMAIN
depends on PCI_MSI
select PCIE_DW_HOST
config PCIE_SPEAR13XX
bool "STMicroelectronics SPEAr PCIe controller"
depends on ARCH_SPEAR13XX || COMPILE_TEST
depends on PCI_MSI_IRQ_DOMAIN
depends on PCI_MSI
select PCIE_DW_HOST
help
Say Y here if you want PCIe support on SPEAr13XX SoCs.
@ -111,7 +111,7 @@ config PCI_KEYSTONE
config PCI_KEYSTONE_HOST
bool "PCI Keystone Host Mode"
depends on ARCH_KEYSTONE || ARCH_K3 || COMPILE_TEST
depends on PCI_MSI_IRQ_DOMAIN
depends on PCI_MSI
select PCIE_DW_HOST
select PCI_KEYSTONE
help
@ -135,7 +135,7 @@ config PCI_KEYSTONE_EP
config PCI_LAYERSCAPE
bool "Freescale Layerscape PCIe controller - Host mode"
depends on OF && (ARM || ARCH_LAYERSCAPE || COMPILE_TEST)
depends on PCI_MSI_IRQ_DOMAIN
depends on PCI_MSI
select PCIE_DW_HOST
select MFD_SYSCON
help
@ -160,7 +160,7 @@ config PCI_LAYERSCAPE_EP
config PCI_HISI
depends on OF && (ARM64 || COMPILE_TEST)
bool "HiSilicon Hip05 and Hip06 SoCs PCIe controllers"
depends on PCI_MSI_IRQ_DOMAIN
depends on PCI_MSI
select PCIE_DW_HOST
select PCI_HOST_COMMON
help
@ -170,7 +170,7 @@ config PCI_HISI
config PCIE_QCOM
bool "Qualcomm PCIe controller"
depends on OF && (ARCH_QCOM || COMPILE_TEST)
depends on PCI_MSI_IRQ_DOMAIN
depends on PCI_MSI
select PCIE_DW_HOST
select CRC8
help
@ -191,7 +191,7 @@ config PCIE_QCOM_EP
config PCIE_ARMADA_8K
bool "Marvell Armada-8K PCIe controller"
depends on ARCH_MVEBU || COMPILE_TEST
depends on PCI_MSI_IRQ_DOMAIN
depends on PCI_MSI
select PCIE_DW_HOST
help
Say Y here if you want to enable PCIe controller support on
@ -205,7 +205,7 @@ config PCIE_ARTPEC6
config PCIE_ARTPEC6_HOST
bool "Axis ARTPEC-6 PCIe controller Host Mode"
depends on MACH_ARTPEC6 || COMPILE_TEST
depends on PCI_MSI_IRQ_DOMAIN
depends on PCI_MSI
select PCIE_DW_HOST
select PCIE_ARTPEC6
help
@ -226,7 +226,7 @@ config PCIE_ROCKCHIP_DW_HOST
bool "Rockchip DesignWare PCIe controller"
select PCIE_DW
select PCIE_DW_HOST
depends on PCI_MSI_IRQ_DOMAIN
depends on PCI_MSI
depends on ARCH_ROCKCHIP || COMPILE_TEST
depends on OF
help
@ -236,7 +236,7 @@ config PCIE_ROCKCHIP_DW_HOST
config PCIE_INTEL_GW
bool "Intel Gateway PCIe host controller support"
depends on OF && (X86 || COMPILE_TEST)
depends on PCI_MSI_IRQ_DOMAIN
depends on PCI_MSI
select PCIE_DW_HOST
help
Say 'Y' here to enable PCIe Host controller support on Intel
@ -250,7 +250,7 @@ config PCIE_KEEMBAY
config PCIE_KEEMBAY_HOST
bool "Intel Keem Bay PCIe controller - Host mode"
depends on ARCH_KEEMBAY || COMPILE_TEST
depends on PCI && PCI_MSI_IRQ_DOMAIN
depends on PCI_MSI
select PCIE_DW_HOST
select PCIE_KEEMBAY
help
@ -262,7 +262,7 @@ config PCIE_KEEMBAY_HOST
config PCIE_KEEMBAY_EP
bool "Intel Keem Bay PCIe controller - Endpoint mode"
depends on ARCH_KEEMBAY || COMPILE_TEST
depends on PCI && PCI_MSI_IRQ_DOMAIN
depends on PCI_MSI
depends on PCI_ENDPOINT
select PCIE_DW_EP
select PCIE_KEEMBAY
@ -275,7 +275,7 @@ config PCIE_KEEMBAY_EP
config PCIE_KIRIN
depends on OF && (ARM64 || COMPILE_TEST)
tristate "HiSilicon Kirin series SoCs PCIe controllers"
depends on PCI_MSI_IRQ_DOMAIN
depends on PCI_MSI
select PCIE_DW_HOST
help
Say Y here if you want PCIe controller support
@ -284,7 +284,7 @@ config PCIE_KIRIN
config PCIE_HISI_STB
bool "HiSilicon STB SoCs PCIe controllers"
depends on ARCH_HISI || COMPILE_TEST
depends on PCI_MSI_IRQ_DOMAIN
depends on PCI_MSI
select PCIE_DW_HOST
help
Say Y here if you want PCIe controller support on HiSilicon STB SoCs
@ -292,7 +292,7 @@ config PCIE_HISI_STB
config PCI_MESON
tristate "MESON PCIe controller"
default m if ARCH_MESON
depends on PCI_MSI_IRQ_DOMAIN
depends on PCI_MSI
select PCIE_DW_HOST
help
Say Y here if you want to enable PCI controller support on Amlogic
@ -306,7 +306,7 @@ config PCIE_TEGRA194
config PCIE_TEGRA194_HOST
tristate "NVIDIA Tegra194 (and later) PCIe controller - Host Mode"
depends on ARCH_TEGRA_194_SOC || COMPILE_TEST
depends on PCI_MSI_IRQ_DOMAIN
depends on PCI_MSI
select PCIE_DW_HOST
select PHY_TEGRA194_P2U
select PCIE_TEGRA194
@ -336,7 +336,7 @@ config PCIE_TEGRA194_EP
config PCIE_VISCONTI_HOST
bool "Toshiba Visconti PCIe controllers"
depends on ARCH_VISCONTI || COMPILE_TEST
depends on PCI_MSI_IRQ_DOMAIN
depends on PCI_MSI
select PCIE_DW_HOST
help
Say Y here if you want PCIe controller support on Toshiba Visconti SoC.
@ -346,7 +346,7 @@ config PCIE_UNIPHIER
bool "Socionext UniPhier PCIe host controllers"
depends on ARCH_UNIPHIER || COMPILE_TEST
depends on OF && HAS_IOMEM
depends on PCI_MSI_IRQ_DOMAIN
depends on PCI_MSI
select PCIE_DW_HOST
help
Say Y here if you want PCIe host controller support on UniPhier SoCs.
@ -365,7 +365,7 @@ config PCIE_UNIPHIER_EP
config PCIE_AL
bool "Amazon Annapurna Labs PCIe controller"
depends on OF && (ARM64 || COMPILE_TEST)
depends on PCI_MSI_IRQ_DOMAIN
depends on PCI_MSI
select PCIE_DW_HOST
select PCI_ECAM
help
@ -377,7 +377,7 @@ config PCIE_AL
config PCIE_FU740
bool "SiFive FU740 PCIe host controller"
depends on PCI_MSI_IRQ_DOMAIN
depends on PCI_MSI
depends on SOC_SIFIVE || COMPILE_TEST
select PCIE_DW_HOST
help

6
drivers/pci/controller/mobiveil/Kconfig
View File

@ -8,14 +8,14 @@ config PCIE_MOBIVEIL
config PCIE_MOBIVEIL_HOST
bool
depends on PCI_MSI_IRQ_DOMAIN
depends on PCI_MSI
select PCIE_MOBIVEIL
config PCIE_MOBIVEIL_PLAT
bool "Mobiveil AXI PCIe controller"
depends on ARCH_ZYNQMP || COMPILE_TEST
depends on OF
depends on PCI_MSI_IRQ_DOMAIN
depends on PCI_MSI
select PCIE_MOBIVEIL_HOST
help
Say Y here if you want to enable support for the Mobiveil AXI PCIe
@ -25,7 +25,7 @@ config PCIE_MOBIVEIL_PLAT
config PCIE_LAYERSCAPE_GEN4
bool "Freescale Layerscape PCIe Gen4 controller"
depends on ARCH_LAYERSCAPE || COMPILE_TEST
depends on PCI_MSI_IRQ_DOMAIN
depends on PCI_MSI
select PCIE_MOBIVEIL_HOST
help
Say Y here if you want PCIe Gen4 controller support on

2
drivers/pci/msi/Makefile
View File

@ -3,5 +3,5 @@
# Makefile for the PCI/MSI
obj-$(CONFIG_PCI) += pcidev_msi.o
obj-$(CONFIG_PCI_MSI) += msi.o
obj-$(CONFIG_PCI_MSI_IRQ_DOMAIN) += irqdomain.o
obj-$(CONFIG_PCI_MSI) += irqdomain.o
obj-$(CONFIG_PCI_MSI_ARCH_FALLBACKS) += legacy.o

2
drivers/pci/probe.c
View File

@ -842,7 +842,6 @@ static struct irq_domain *pci_host_bridge_msi_domain(struct pci_bus *bus)
if (!d)
d = pci_host_bridge_acpi_msi_domain(bus);
#ifdef CONFIG_PCI_MSI_IRQ_DOMAIN
/*
* If no IRQ domain was found via the OF tree, try looking it up
* directly through the fwnode_handle.
@ -854,7 +853,6 @@ static struct irq_domain *pci_host_bridge_msi_domain(struct pci_bus *bus)
d = irq_find_matching_fwnode(fwnode,
DOMAIN_BUS_PCI_MSI);
}
#endif
return d;
}

29
include/linux/msi.h
View File

@ -238,15 +238,6 @@ static inline void msi_desc_set_iommu_cookie(struct msi_desc *desc,
}
#endif
#ifdef CONFIG_PCI_MSI
struct pci_dev *msi_desc_to_pci_dev(struct msi_desc *desc);
void pci_write_msi_msg(unsigned int irq, struct msi_msg *msg);
#else /* CONFIG_PCI_MSI */
static inline void pci_write_msi_msg(unsigned int irq, struct msi_msg *msg)
{
}
#endif /* CONFIG_PCI_MSI */
int msi_add_msi_desc(struct device *dev, struct msi_desc *init_desc);
void msi_free_msi_descs_range(struct device *dev, unsigned int first_index, unsigned int last_index);
@ -259,12 +250,6 @@ static inline void msi_free_msi_descs(struct device *dev)
msi_free_msi_descs_range(dev, 0, MSI_MAX_INDEX);
}
void __pci_read_msi_msg(struct msi_desc *entry, struct msi_msg *msg);
void __pci_write_msi_msg(struct msi_desc *entry, struct msi_msg *msg);
void pci_msi_mask_irq(struct irq_data *data);
void pci_msi_unmask_irq(struct irq_data *data);
/*
* The arch hooks to setup up msi irqs. Default functions are implemented
* as weak symbols so that they /can/ be overriden by architecture specific
@ -468,18 +453,26 @@ void platform_msi_device_domain_free(struct irq_domain *domain, unsigned int vir
void *platform_msi_get_host_data(struct irq_domain *domain);
#endif /* CONFIG_GENERIC_MSI_IRQ_DOMAIN */
#ifdef CONFIG_PCI_MSI_IRQ_DOMAIN
/* PCI specific interfaces */
#ifdef CONFIG_PCI_MSI
struct pci_dev *msi_desc_to_pci_dev(struct msi_desc *desc);
void pci_write_msi_msg(unsigned int irq, struct msi_msg *msg);
void __pci_read_msi_msg(struct msi_desc *entry, struct msi_msg *msg);
void __pci_write_msi_msg(struct msi_desc *entry, struct msi_msg *msg);
void pci_msi_mask_irq(struct irq_data *data);
void pci_msi_unmask_irq(struct irq_data *data);
struct irq_domain *pci_msi_create_irq_domain(struct fwnode_handle *fwnode,
struct msi_domain_info *info,
struct irq_domain *parent);
u32 pci_msi_domain_get_msi_rid(struct irq_domain *domain, struct pci_dev *pdev);
struct irq_domain *pci_msi_get_device_domain(struct pci_dev *pdev);
bool pci_dev_has_special_msi_domain(struct pci_dev *pdev);
#else
#else /* CONFIG_PCI_MSI */
static inline struct irq_domain *pci_msi_get_device_domain(struct pci_dev *pdev)
{
return NULL;
}
#endif /* CONFIG_PCI_MSI_IRQ_DOMAIN */
static inline void pci_write_msi_msg(unsigned int irq, struct msi_msg *msg) { }
#endif /* !CONFIG_PCI_MSI */
#endif /* LINUX_MSI_H */