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powerpc/eeh: Delay probing EEH device during hotplug

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Commit 1c509148b ("powerpc/eeh: Do probe on pci_dn") probes EEH
devices in early stage, which is reasonable to pSeries platform.
However, it's wrong for PowerNV platform because the PE# isn't
determined until the resources (IO and MMIO) are assigned to
PE in hotplug case. So we have to delay probing EEH devices
for PowerNV platform until the PE# is assigned.

Fixes: ff57b454dd ("powerpc/eeh: Do probe on pci_dn")
Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Gavin Shan 2015-05-01 09:22:15 +10:00 • committed by Michael Ellerman
parent 1ae79b78bc
commit d91dafc02f
1 changed files with 6 additions and 0 deletions
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6
arch/powerpc/kernel/eeh.c
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@ -1061,6 +1061,9 @@ void eeh_add_device_early(struct pci_dn *pdn)
if (!edev || !eeh_enabled()) if (!edev || !eeh_enabled())
return; return;
if (!eeh_has_flag(EEH_PROBE_MODE_DEVTREE))
return;
/* USB Bus children of PCI devices will not have BUID's */ /* USB Bus children of PCI devices will not have BUID's */
phb = edev->phb; phb = edev->phb;
if (NULL == phb || if (NULL == phb ||
@ -1115,6 +1118,9 @@ void eeh_add_device_late(struct pci_dev *dev)
return; return;
} }
if (eeh_has_flag(EEH_PROBE_MODE_DEV))
eeh_ops->probe(pdn, NULL);
/* /*
* The EEH cache might not be removed correctly because of * The EEH cache might not be removed correctly because of
* unbalanced kref to the device during unplug time, which * unbalanced kref to the device during unplug time, which