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| author | Thomas Gleixner <tglx@linutronix.de> | 2020-08-26 13:17:02 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2020-09-16 16:52:37 +0200 |
| commit | 077ee78e392869e46ae6bdc6ba2a3c4249d0b5e1 (patch) | |
| tree | 023c1687261dd5cd2453506fc8001d8af5410c96 /arch/ia64 | |
| parent | 2c681e6b37674dc3941869cb262e26c8a6b34047 (diff) | |
| download | linux-next-077ee78e392869e46ae6bdc6ba2a3c4249d0b5e1.tar.gz | |
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/ia64')
| -rw-r--r-- | arch/ia64/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig index 5b4ec80bf586..7ff5b3bbf160 100644 --- a/arch/ia64/Kconfig +++ b/arch/ia64/Kconfig @@ -56,6 +56,7 @@ config IA64 select NEED_DMA_MAP_STATE select NEED_SG_DMA_LENGTH select NUMA if !FLATMEM + select PCI_MSI_ARCH_FALLBACKS default y help The Itanium Processor Family is Intel's 64-bit successor to |