[POWERPC] Fix PCI IRQ fallback code to not map IRQ 0

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The PCI IRQ code has a fallback when the device-tree parsing fails, that
tries to map the interrupt indicated by PCI_INTERRUPT_LINE if the firmware
set something in there. This is a bit fragile but has proven useful in some
cases so far. However, it's causing us to incorrectly try to map interrupt 0
on various setups, so let's prevent that case, as none of the cases where
the fallback is legit should have an IRQ 0.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

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Benjamin Herrenschmidt 2007-12-20 15:10:02 +11:00 • committed by Paul Mackerras

parent 553aa7659b

commit 54a24cbbd0

1 changed files with 3 additions and 2 deletions

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arch/powerpc/kernel/pci-common.c

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