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authorThomas Gleixner <tglx@linutronix.de>2020-08-26 13:17:02 +0200
committerThomas Gleixner <tglx@linutronix.de>2020-09-16 16:52:37 +0200
commit077ee78e392869e46ae6bdc6ba2a3c4249d0b5e1 (patch)
tree023c1687261dd5cd2453506fc8001d8af5410c96 /arch/s390/Kconfig
parent2c681e6b37674dc3941869cb262e26c8a6b34047 (diff)
downloadlinux-077ee78e392869e46ae6bdc6ba2a3c4249d0b5e1.tar.bz2
PCI/MSI: Make arch_.*_msi_irq[s] fallbacks selectable
The arch_.*_msi_irq[s] fallbacks are compiled in whether an architecture requires them or not. Architectures which are fully utilizing hierarchical irq domains should never call into that code. It's not only architectures which depend on that by implementing one or more of the weak functions, there is also a bunch of drivers which relies on the weak functions which invoke msi_controller::setup_irq[s] and msi_controller::teardown_irq. Make the architectures and drivers which rely on them select them in Kconfig and if not selected replace them by stub functions which emit a warning and fail the PCI/MSI interrupt allocation. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/r/20200826112333.992429909@linutronix.de
Diffstat (limited to 'arch/s390/Kconfig')
-rw-r--r--arch/s390/Kconfig1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index b29fcc66ec39..63dd5a0aa252 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -185,6 +185,7 @@ config S390
select OLD_SIGSUSPEND3
select PCI_DOMAINS if PCI
select PCI_MSI if PCI
+ select PCI_MSI_ARCH_FALLBACKS
select SPARSE_IRQ
select SYSCTL_EXCEPTION_TRACE
select THREAD_INFO_IN_TASK