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[IA64]: SN fix bus->sysdata pointer and memory cleanups
The main issue is that bus_fixup calls may potentially call functions that require a valid bus->sysdata pointer. Since this is the case, we must set the bus->sysdata pointer before calling the bus_fixup functions. The remaining changes are simple fixes to make sure memory is cleaned up in the function. Signed-off-by: Prarit Bhargava <prarit@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
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@ -322,7 +322,7 @@ void sn_pci_controller_fixup(int segment, int busnum, struct pci_bus *bus)
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struct pci_controller *controller;
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struct pcibus_bussoft *prom_bussoft_ptr;
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struct hubdev_info *hubdev_info;
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void *provider_soft;
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void *provider_soft = NULL;
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struct sn_pcibus_provider *provider;
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status = sal_get_pcibus_info((u64) segment, (u64) busnum,
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@ -338,7 +338,7 @@ void sn_pci_controller_fixup(int segment, int busnum, struct pci_bus *bus)
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if (bus == NULL) {
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bus = pci_scan_bus(busnum, &pci_root_ops, controller);
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if (bus == NULL)
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return; /* error, or bus already scanned */
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goto error_return; /* error, or bus already scanned */
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bus->sysdata = NULL;
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}
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@ -351,28 +351,30 @@ void sn_pci_controller_fixup(int segment, int busnum, struct pci_bus *bus)
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*/
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if (prom_bussoft_ptr->bs_asic_type >= PCIIO_ASIC_MAX_TYPES)
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return; /* unsupported asic type */
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goto error_return; /* unsupported asic type */
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if (prom_bussoft_ptr->bs_asic_type == PCIIO_ASIC_TYPE_PPB)
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goto error_return; /* no further fixup necessary */
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provider = sn_pci_provider[prom_bussoft_ptr->bs_asic_type];
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if (provider == NULL)
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return; /* no provider registerd for this asic */
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goto error_return; /* no provider registerd for this asic */
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provider_soft = NULL;
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bus->sysdata = controller;
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if (provider->bus_fixup)
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provider_soft = (*provider->bus_fixup) (prom_bussoft_ptr, controller);
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if (provider_soft == NULL)
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return; /* fixup failed or not applicable */
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if (provider_soft == NULL) {
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/* fixup failed or not applicable */
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bus->sysdata = NULL;
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goto error_return;
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}
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/*
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* Generic bus fixup goes here. Don't reference prom_bussoft_ptr
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* after this point.
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*/
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bus->sysdata = controller;
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PCI_CONTROLLER(bus)->platform_data = provider_soft;
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nasid = NASID_GET(SN_PCIBUS_BUSSOFT(bus)->bs_base);
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cnode = nasid_to_cnodeid(nasid);
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