Patchwork [Fwd:,[PATCH] From: Gavin Shan <shangw@linux.vnet.ibm.com>]

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Submitter Benjamin Herrenschmidt
Date Nov. 23, 2012, 2:22 a.m.
Message ID <1353637373.17856.58.camel@pasglop>
Download mbox | patch
Permalink /patch/201234/
State Accepted
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Benjamin Herrenschmidt - Nov. 23, 2012, 2:22 a.m.
pseries msi: fixed crash on PCI devices without EEH capability

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
---
 arch/powerpc/platforms/pseries/msi.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

Patch

diff --git a/arch/powerpc/platforms/pseries/msi.c b/arch/powerpc/platforms/pseries/msi.c
index d19f497..e5b0847 100644
--- a/arch/powerpc/platforms/pseries/msi.c
+++ b/arch/powerpc/platforms/pseries/msi.c
@@ -220,7 +220,8 @@  static struct device_node *find_pe_dn(struct pci_dev *dev, int *total)
 
 	/* Get the top level device in the PE */
 	edev = of_node_to_eeh_dev(dn);
-	edev = list_first_entry(&edev->pe->edevs, struct eeh_dev, list);
+	if (edev->pe)
+		edev = list_first_entry(&edev->pe->edevs, struct eeh_dev, list);
 	dn = eeh_dev_to_of_node(edev);
 	if (!dn)
 		return NULL;