[PATCH] pSeries - read irqs dynamically

For I/O DLPAR to work properly, the kernel needs to allow for dynamic
assignment of the irq field of the pci_dev structure upon dynamic bus
addition.  This patch moves the assignment of that field from
pSeries_final_fixup() to pcibios_fixup_bus(), which enables dynamic
assignment for the children of a newly added bus.

Currently, pci_devs receive their irq numbers in one of two ways.  The
irq line is either read at boot for all pci_devs, or read by the rpaphp
module at slot enable time.  The latter is no longer sufficient for
DLPAR addition of slots that don't qualify as PCI-hotplug capable.
This solution handles the cases of boot and dynamic add.

Signed-off-by: John Rose <johnrose@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 1 insertions, 2 deletions

diff --git a/arch/ppc64/kernel/pSeries_setup.c b/arch/ppc64/kernel/pSeries_setup.c
index 41e6de2c9158..f2b41243342c 100644
--- a/arch/ppc64/kernel/pSeries_setup.c
+++ b/arch/ppc64/kernel/pSeries_setup.c
@@ -71,8 +71,6 @@
 #define DBG(fmt...)
 #endif
 
-extern void pSeries_final_fixup(void);
-
 extern void find_udbg_vterm(void);
 extern void system_reset_fwnmi(void);   /* from head.S */
 extern void machine_check_fwnmi(void);  /* from head.S */
@@ -425,6 +423,7 @@ struct machdep_calls __initdata pSeries_md = {
         .get_cpuinfo            = pSeries_get_cpuinfo,
         .log_error              = pSeries_log_error,
         .pcibios_fixup          = pSeries_final_fixup,
+        .irq_bus_setup          = pSeries_irq_bus_setup,
         .restart                = rtas_restart,
         .power_off              = rtas_power_off,
         .halt                   = rtas_halt,