diff options
| author | Gavin Shan <shangw@linux.vnet.ibm.com> | 2013-06-20 09:20:59 +0400 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2013-06-20 11:05:58 +0400 |
| commit | 26a74850b35d85a81155aa0e51211fbd6eecad25 (patch) | |
| tree | c225e98989970b635329a4f95cd56b4a9c8264c5 /arch | |
| parent | 326a98ea93b5d2bbf53db5c25533ca3a7c4cce65 (diff) | |
| download | linux-26a74850b35d85a81155aa0e51211fbd6eecad25.tar.xz | |
powerpc/eeh: Delay EEH probe during hotplug
While doing EEH recovery, the PCI devices of the problematic PE
should be removed and then added to the system again. During the
so-called hotplug event, the PCI devices of the problematic PE
will be probed through early/late phase. We would delay EEH probe
on late point for PowerNV platform since the PCI device isn't
available in early phase.
Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/kernel/eeh.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/eeh.c b/arch/powerpc/kernel/eeh.c index cda0b62d99f5..7d169d35b5b0 100644 --- a/arch/powerpc/kernel/eeh.c +++ b/arch/powerpc/kernel/eeh.c @@ -758,6 +758,14 @@ static void eeh_add_device_early(struct device_node *dn) { struct pci_controller *phb; + /* + * If we're doing EEH probe based on PCI device, we + * would delay the probe until late stage because + * the PCI device isn't available this moment. + */ + if (!eeh_probe_mode_devtree()) + return; + if (!of_node_to_eeh_dev(dn)) return; phb = of_node_to_eeh_dev(dn)->phb; @@ -766,7 +774,6 @@ static void eeh_add_device_early(struct device_node *dn) if (NULL == phb || 0 == phb->buid) return; - /* FIXME: hotplug support on POWERNV */ eeh_ops->of_probe(dn, NULL); } @@ -817,6 +824,13 @@ static void eeh_add_device_late(struct pci_dev *dev) edev->pdev = dev; dev->dev.archdata.edev = edev; + /* + * We have to do the EEH probe here because the PCI device + * hasn't been created yet in the early stage. + */ + if (eeh_probe_mode_dev()) + eeh_ops->dev_probe(dev, NULL); + eeh_addr_cache_insert_dev(dev); } |