From b37ceefe7cfc56f27f03269206a53faedb8be9fd Mon Sep 17 00:00:00 2001 From: Linas Vepstas Date: Sat, 3 Nov 2007 07:29:01 +1100 Subject: [PATCH] [POWERPC] EEH: Avoid crash on null device Bugfix: avoid crash if there's no PCI device for a given openfirmware node. Signed-off-by: Linas Vepstas Signed-off-by: Paul Mackerras --- arch/powerpc/platforms/pseries/eeh.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/arch/powerpc/platforms/pseries/eeh.c b/arch/powerpc/platforms/pseries/eeh.c index 22322b35a0ff..00cfb53d746c 100644 --- a/arch/powerpc/platforms/pseries/eeh.c +++ b/arch/powerpc/platforms/pseries/eeh.c @@ -186,6 +186,11 @@ static size_t gather_pci_data(struct pci_dn *pdn, char * buf, size_t len) n += scnprintf(buf+n, len-n, "cmd/stat:%x\n", cfg); printk(KERN_WARNING "EEH: PCI cmd/status register: %08x\n", cfg); + if (!dev) { + printk(KERN_WARNING "EEH: no PCI device for this of node\n"); + return n; + } + /* Gather bridge-specific registers */ if (dev->class >> 16 == PCI_BASE_CLASS_BRIDGE) { rtas_read_config(pdn, PCI_SEC_STATUS, 2, &cfg); @@ -198,7 +203,7 @@ static size_t gather_pci_data(struct pci_dn *pdn, char * buf, size_t len) } /* Dump out the PCI-X command and status regs */ - cap = pci_find_capability(pdn->pcidev, PCI_CAP_ID_PCIX); + cap = pci_find_capability(dev, PCI_CAP_ID_PCIX); if (cap) { rtas_read_config(pdn, cap, 4, &cfg); n += scnprintf(buf+n, len-n, "pcix-cmd:%x\n", cfg); @@ -210,7 +215,7 @@ static size_t gather_pci_data(struct pci_dn *pdn, char * buf, size_t len) } /* If PCI-E capable, dump PCI-E cap 10, and the AER */ - cap = pci_find_capability(pdn->pcidev, PCI_CAP_ID_EXP); + cap = pci_find_capability(dev, PCI_CAP_ID_EXP); if (cap) { n += scnprintf(buf+n, len-n, "pci-e cap10:\n"); printk(KERN_WARNING @@ -222,7 +227,7 @@ static size_t gather_pci_data(struct pci_dn *pdn, char * buf, size_t len) printk(KERN_WARNING "EEH: PCI-E %02x: %08x\n", i, cfg); } - cap = pci_find_ext_capability(pdn->pcidev, PCI_EXT_CAP_ID_ERR); + cap = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR); if (cap) { n += scnprintf(buf+n, len-n, "pci-e AER:\n"); printk(KERN_WARNING -- 2.20.1