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authorGavin Shan <gwshan@linux.vnet.ibm.com>2015-05-01 09:22:15 +1000
committerMichael Ellerman <mpe@ellerman.id.au>2015-05-01 13:52:32 +1000
commitd91dafc02f42e23c1a906202ebde5d7c49ef058d (patch)
tree052bf14e9ed505257ee2cad44048b0c7ba264154 /arch/powerpc
parent1ae79b78bc52b910a224f3795122538516e07b5f (diff)
downloadop-kernel-dev-d91dafc02f42e23c1a906202ebde5d7c49ef058d.zip
op-kernel-dev-d91dafc02f42e23c1a906202ebde5d7c49ef058d.tar.gz
powerpc/eeh: Delay probing EEH device during hotplug
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: ff57b454ddb9 ("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>
Diffstat (limited to 'arch/powerpc')
-rw-r--r--arch/powerpc/kernel/eeh.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/eeh.c b/arch/powerpc/kernel/eeh.c
index fa046ca..9ee61d1 100644
--- a/arch/powerpc/kernel/eeh.c
+++ b/arch/powerpc/kernel/eeh.c
@@ -1061,6 +1061,9 @@ void eeh_add_device_early(struct pci_dn *pdn)
if (!edev || !eeh_enabled())
return;
+ if (!eeh_has_flag(EEH_PROBE_MODE_DEVTREE))
+ return;
+
/* USB Bus children of PCI devices will not have BUID's */
phb = edev->phb;
if (NULL == phb ||
@@ -1115,6 +1118,9 @@ void eeh_add_device_late(struct pci_dev *dev)
return;
}
+ if (eeh_has_flag(EEH_PROBE_MODE_DEV))
+ eeh_ops->probe(pdn, NULL);
+
/*
* The EEH cache might not be removed correctly because of
* unbalanced kref to the device during unplug time, which
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