Under some special circumstances, the EEH device doesn't have the
associated device tree node or PCI device. It is caused by the
PCI device corresponding to the device tree node can't support
EEH function.
The patch enhances converting EEH device to device tree node or
PCI device accordingly to avoid system crash.
Signed-off-by: Gavin Shan <sha...@linux.vnet.ibm.com>
---
arch/powerpc/include/asm/eeh.h | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/include/asm/eeh.h b/arch/powerpc/include/asm/eeh.h
index a80e32b..e32c3c5 100644
--- a/arch/powerpc/include/asm/eeh.h
+++ b/arch/powerpc/include/asm/eeh.h
@@ -95,12 +95,12 @@ struct eeh_dev {
static inline struct device_node *eeh_dev_to_of_node(struct eeh_dev *edev)
{
- return edev->dn;
+ return edev ? edev->dn : NULL;
}
static inline struct pci_dev *eeh_dev_to_pci_dev(struct eeh_dev *edev)
{
- return edev->pdev;
+ return edev ? edev->pdev : NULL;
}
/*
--
1.7.5.4
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