[POWERPC] iSeries: eliminate pci_dn bussubno

xlate_iomm_address() really wants the ds_addr to pass to the HV, so store
that value (instead of the BAR number) when we allocate the device bars.
This is not a fast path, so we can look up the device_node property
there instead of using the bussubno field of the pci_dn.

The other user of iseries_ds_addr() was already scanning the device tree,
so looking up a property will not slow it down any more.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 0 insertions, 5 deletions

diff --git a/arch/powerpc/kernel/pci_dn.c b/arch/powerpc/kernel/pci_dn.c
index 85d4d8924b5c..1c67de52e3ce 100644
--- a/arch/powerpc/kernel/pci_dn.c
+++ b/arch/powerpc/kernel/pci_dn.c
@@ -56,11 +56,6 @@ static void * __devinit update_dn_pci_info(struct device_node *dn, void *data)
                 pdn->busno = (regs[0] >> 16) & 0xff;
                 pdn->devfn = (regs[0] >> 8) & 0xff;
         }
-        if (firmware_has_feature(FW_FEATURE_ISERIES)) {
-                const u32 *busp = of_get_property(dn, "linux,subbus", NULL);
-                if (busp)
-                        pdn->bussubno = *busp;
-        }
 
         pdn->pci_ext_config_space = (type && *type == 1);
         return NULL;