powerpc/eeh: Fix crash in eeh_add_device_early() on Cell

The recent change to the EEH probing causes a crash on Cell because
eeh_ops is NULL.

Check if EEH is enabled and if not bail out.

Fixes: ff57b454ddb9 ("powerpc/eeh: Do probe on pci_dn")
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

1 files changed, 1 insertions, 1 deletions

diff --git a/arch/powerpc/kernel/eeh.c b/arch/powerpc/kernel/eeh.c
index 76253eb146be..a4c62eb0ee48 100644
--- a/arch/powerpc/kernel/eeh.c
+++ b/arch/powerpc/kernel/eeh.c
@@ -1053,7 +1053,7 @@ void eeh_add_device_early(struct pci_dn *pdn)
         struct pci_controller *phb;
         struct eeh_dev *edev = pdn_to_eeh_dev(pdn);
 
-        if (!edev)
+        if (!edev || !eeh_enabled())
                 return;
 
         /* USB Bus children of PCI devices will not have BUID's */