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[POWERPC] iSeries: eliminate pci_dn bussubno

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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>
This commit is contained in:
Stephen Rothwell
2007-12-21 15:50:09 +11:00
committed by Paul Mackerras
parent b6ed42a794
commit 885b86e4e7
3 changed files with 7 additions and 11 deletions
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5
arch/powerpc/kernel/pci_dn.c
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@@ -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;