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    x86: Fix SCI on IOAPIC != 0 · 18dce6ba
    Yinghai Lu 提交于
    Thomas Renninger <trenn@suse.de> reported on IBM x3330
    
    booting a latest kernel on this machine results in:
    
    PCI: PCI BIOS revision 2.10 entry at 0xfd61c, last bus=1
    PCI: Using configuration type 1 for base access bio: create slab <bio-0> at 0
    ACPI: SCI (IRQ30) allocation failed
    ACPI Exception: AE_NOT_ACQUIRED, Unable to install System Control Interrupt handler (20090903/evevent-161)
    ACPI: Unable to start the ACPI Interpreter
    
    Later all kind of devices fail...
    
    and bisect it down to this commit:
    commit b9c61b70
    
        x86/pci: update pirq_enable_irq() to setup io apic routing
    
    it turns out we need to set irq routing for the sci on ioapic1 early.
    
    -v2: make it work without sparseirq too.
    -v3: fix checkpatch.pl warning, and cc to stable
    Reported-by: NThomas Renninger <trenn@suse.de>
    Bisected-by: NThomas Renninger <trenn@suse.de>
    Tested-by: NThomas Renninger <trenn@suse.de>
    Signed-off-by: NYinghai Lu <yinghai@kernel.org>
    LKML-Reference: <1265793639-15071-2-git-send-email-yinghai@kernel.org>
    Cc: stable@kernel.org
    Signed-off-by: NH. Peter Anvin <hpa@zytor.com>
    18dce6ba
io_apic.c 102.8 KB