[POWERPC] Make pci_read_irq_line the default

This patch reworks the way IRQs are fixed up on PCI for arch powerpc.

It makes pci_read_irq_line() called by default in the PCI code for
devices that are probed, and add an optional per-device fixup in
ppc_md for platforms that really need to correct what they obtain
from pci_read_irq_line().

It also removes ppc_md.irq_bus_setup which was only used by pSeries
and should not be needed anymore.

I've also removed the pSeries s7a workaround as it can't work with
the current interrupt code anyway. I'm trying to get one of these
machines working so I can test a proper fix for that problem.

I also haven't updated the old-style fixup code from 85xx_cds.c
because it's actually buggy :) It assigns pci_dev->irq hard coded
numbers which is no good with the new IRQ mapping code. It should
at least use irq_create_mapping(NULL, hard_coded_number); and possibly
also set_irq_type() to set them as level low.

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

3 files changed, 0 insertions, 10 deletions

diff --git a/arch/powerpc/platforms/pasemi/pasemi.h b/arch/powerpc/platforms/pasemi/pasemi.h
index fd71d72736b2..51c2a2397ecf 100644
--- a/arch/powerpc/platforms/pasemi/pasemi.h
+++ b/arch/powerpc/platforms/pasemi/pasemi.h
@@ -3,6 +3,5 @@
 
 extern unsigned long pas_get_boot_time(void);
 extern void pas_pci_init(void);
-extern void pas_pcibios_fixup(void);
 
 #endif /* _PASEMI_PASEMI_H */
diff --git a/arch/powerpc/platforms/pasemi/pci.c b/arch/powerpc/platforms/pasemi/pci.c
index 39020c1fa13d..faa618e04047 100644
--- a/arch/powerpc/platforms/pasemi/pci.c
+++ b/arch/powerpc/platforms/pasemi/pci.c
@@ -148,14 +148,6 @@ static int __init add_bridge(struct device_node *dev)
 }
 
 
-void __init pas_pcibios_fixup(void)
-{
-        struct pci_dev *dev = NULL;
-
-        for_each_pci_dev(dev)
-                pci_read_irq_line(dev);
-}
-
 static void __init pas_fixup_phb_resources(void)
 {
         struct pci_controller *hose, *tmp;
diff --git a/arch/powerpc/platforms/pasemi/setup.c b/arch/powerpc/platforms/pasemi/setup.c
index 106896c3b60a..eb2457567f8a 100644
--- a/arch/powerpc/platforms/pasemi/setup.c
+++ b/arch/powerpc/platforms/pasemi/setup.c
@@ -176,7 +176,6 @@ define_machine(pas) {
         .init_early             = pas_init_early,
         .init_IRQ               = pas_init_IRQ,
         .get_irq                = mpic_get_irq,
-        .pcibios_fixup          = pas_pcibios_fixup,
         .restart                = pas_restart,
         .power_off              = pas_power_off,
         .halt                   = pas_halt,