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PCI/MSI: irqchip: Fix PCI_MSI dependencies

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The PCI_MSI symbol is used inconsistently throughout the tree, with some
drivers using 'select' and others using 'depends on', or using conditional
selects.  This keeps causing problems; the latest one is a result of
ARCH_ALPINE using a 'select' statement to enable its platform-specific MSI
driver without enabling MSI:

  warning: (ARCH_ALPINE) selects ALPINE_MSI which has unmet direct dependencies (PCI && PCI_MSI)
  drivers/irqchip/irq-alpine-msi.c:104:15: error: variable 'alpine_msix_domain_info' has initializer but incomplete type
   static struct msi_domain_info alpine_msix_domain_info = {
		 ^~~~~~~~~~~~~~~
  drivers/irqchip/irq-alpine-msi.c:105:2: error: unknown field 'flags' specified in initializer
    .flags = MSI_FLAG_USE_DEF_DOM_OPS | MSI_FLAG_USE_DEF_CHIP_OPS |
    ^
  drivers/irqchip/irq-alpine-msi.c:105:11: error: 'MSI_FLAG_USE_DEF_DOM_OPS' undeclared here (not in a function)
    .flags = MSI_FLAG_USE_DEF_DOM_OPS | MSI_FLAG_USE_DEF_CHIP_OPS |
	     ^~~~~~~~~~~~~~~~~~~~~~~~

There is little reason to enable PCI support for a platform that uses MSI
but then leave MSI disabled at compile time.

Select PCI_MSI from irqchips that implement MSI, and make PCI host bridges
that use MSI on ARM depend on PCI_MSI_IRQ_DOMAIN.

For all three architectures that support PCI_MSI_IRQ_DOMAIN (ARM, ARM64,
X86), enable it by default whenever MSI is enabled.

[bhelgaas: changelog, omit crypto config change]
Suggested-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
This commit is contained in:
Arnd Bergmann
2016-06-15 15:47:33 -05:00
committed by Bjorn Helgaas
parent af8c34ce6a
commit 3ee803641e
5 changed files with 31 additions and 24 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
drivers/irqchip/Kconfig
View File

@@ -15,9 +15,9 @@ config ARM_GIC_MAX_NR
config ARM_GIC_V2M
bool
depends on ARM_GIC
depends on PCI && PCI_MSI
select PCI_MSI_IRQ_DOMAIN
depends on PCI
select ARM_GIC
select PCI_MSI
config GIC_NON_BANKED
bool
@@ -31,7 +31,8 @@ config ARM_GIC_V3
config ARM_GIC_V3_ITS
bool
select PCI_MSI_IRQ_DOMAIN
depends on PCI
depends on PCI_MSI
config ARM_NVIC
bool
@@ -56,13 +57,13 @@ config ARM_VIC_NR
config ARMADA_370_XP_IRQ
bool
select GENERIC_IRQ_CHIP
select PCI_MSI_IRQ_DOMAIN if PCI_MSI
select PCI_MSI if PCI
config ALPINE_MSI
bool
depends on PCI && PCI_MSI
depends on PCI
select PCI_MSI
select GENERIC_IRQ_CHIP
select PCI_MSI_IRQ_DOMAIN
config ATMEL_AIC_IRQ
bool
@@ -111,7 +112,6 @@ config HISILICON_IRQ_MBIGEN
bool
select ARM_GIC_V3
select ARM_GIC_V3_ITS
select GENERIC_MSI_IRQ_DOMAIN
config IMGPDC_IRQ
bool
@@ -244,12 +244,10 @@ config IRQ_MXS
config MVEBU_ODMI
bool
select GENERIC_MSI_IRQ_DOMAIN
config LS_SCFG_MSI
def_bool y if SOC_LS1021A || ARCH_LAYERSCAPE
depends on PCI && PCI_MSI
select PCI_MSI_IRQ_DOMAIN
config PARTITION_PERCPU
bool