From 89a51df5ab1d38b257300b8ac940bbac3bb0eb9b Mon Sep 17 00:00:00 2001
From: Michael Ellerman <mpe@ellerman.id.au>
Date: Tue, 14 Apr 2015 16:49:05 +1000
Subject: [PATCH] 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>
---
arch/powerpc/kernel/eeh.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/powerpc/kernel/eeh.c b/arch/powerpc/kernel/eeh.c
index 76253eb146be2e..a4c62eb0ee48c8 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 */
--
GitLab