From c1ffb910f7a4e1e79d462bb359067d97ad1a8a25 Mon Sep 17 00:00:00 2001 From: Prarit Bhargava Date: Tue, 2 Aug 2005 10:08:00 -0700 Subject: [PATCH] [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 Signed-off-by: Tony Luck --- arch/ia64/sn/kernel/io_init.c | 18 ++++++++++-------- 1 file changed, 10 insertions(+), 8 deletions(-) diff --git a/arch/ia64/sn/kernel/io_init.c b/arch/ia64/sn/kernel/io_init.c index a6649baf629a..7566a97b0ce1 100644 --- a/arch/ia64/sn/kernel/io_init.c +++ b/arch/ia64/sn/kernel/io_init.c @@ -322,7 +322,7 @@ void sn_pci_controller_fixup(int segment, int busnum, struct pci_bus *bus) struct pci_controller *controller; struct pcibus_bussoft *prom_bussoft_ptr; struct hubdev_info *hubdev_info; - void *provider_soft; + void *provider_soft = NULL; struct sn_pcibus_provider *provider; status = sal_get_pcibus_info((u64) segment, (u64) busnum, @@ -338,7 +338,7 @@ void sn_pci_controller_fixup(int segment, int busnum, struct pci_bus *bus) if (bus == NULL) { bus = pci_scan_bus(busnum, &pci_root_ops, controller); if (bus == NULL) - return; /* error, or bus already scanned */ + goto error_return; /* error, or bus already scanned */ bus->sysdata = NULL; } @@ -351,28 +351,30 @@ void sn_pci_controller_fixup(int segment, int busnum, struct pci_bus *bus) */ if (prom_bussoft_ptr->bs_asic_type >= PCIIO_ASIC_MAX_TYPES) - return; /* unsupported asic type */ + goto error_return; /* unsupported asic type */ if (prom_bussoft_ptr->bs_asic_type == PCIIO_ASIC_TYPE_PPB) goto error_return; /* no further fixup necessary */ provider = sn_pci_provider[prom_bussoft_ptr->bs_asic_type]; if (provider == NULL) - return; /* no provider registerd for this asic */ + goto error_return; /* no provider registerd for this asic */ - provider_soft = NULL; + bus->sysdata = controller; if (provider->bus_fixup) provider_soft = (*provider->bus_fixup) (prom_bussoft_ptr, controller); - if (provider_soft == NULL) - return; /* fixup failed or not applicable */ + if (provider_soft == NULL) { + /* fixup failed or not applicable */ + bus->sysdata = NULL; + goto error_return; + } /* * Generic bus fixup goes here. Don't reference prom_bussoft_ptr * after this point. */ - bus->sysdata = controller; PCI_CONTROLLER(bus)->platform_data = provider_soft; nasid = NASID_GET(SN_PCIBUS_BUSSOFT(bus)->bs_base); cnode = nasid_to_cnodeid(nasid);