• Thomas Gleixner's avatar
    PCI/MSI: Make arch_.*_msi_irq[s] fallbacks selectable · 077ee78e
    Thomas Gleixner authored
    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: default avatarThomas Gleixner <tglx@linutronix.de>
    Link: https://lore.kernel.org/r/20200826112333.992429909@linutronix.de
    077ee78e
Kconfig 8.83 KB