[PATCH] pci: bugfix, pci_get_domain_bus_and_slot() needs to inc reference count

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As the notes of this function, pci_get_domain_bus_and_slot() should
increase the reference count.

Signed-off-by: Liu Ping Fan <pingfank@xxxxxxxxxxxxxxxxxx>
---
 drivers/pci/search.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/pci/search.c b/drivers/pci/search.c
index 827ad83..41a5738 100644
--- a/drivers/pci/search.c
+++ b/drivers/pci/search.c
@@ -258,8 +258,10 @@ struct pci_dev *pci_get_domain_bus_and_slot(int domain, unsigned int bus,
 
 	for_each_pci_dev(dev) {
 		if (pci_domain_nr(dev->bus) == domain &&
-		    (dev->bus->number == bus && dev->devfn == devfn))
+		    (dev->bus->number == bus && dev->devfn == devfn)) {
+			pci_dev_get(dev);
 			return dev;
+		}
 	}
 	return NULL;
 }
-- 
1.8.1.4

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