[PATCH v9 04/11] PCI: Fix a device reference count leakage issue in pci_dev_present()

[Yinghai Lu <yinghai@kernel.org>]

From: Jiang Liu <jiang.liu@huawei.com>

Function pci_get_dev_by_id() will hold a reference count on the pci device
returned, so pci_dev_present() should release the corresponding reference
count to avoid memory leakage.

Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
---
 drivers/pci/search.c |   10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/pci/search.c b/drivers/pci/search.c
index bf969ba..d0627fa 100644
--- a/drivers/pci/search.c
+++ b/drivers/pci/search.c
@@ -319,13 +319,13 @@ int pci_dev_present(const struct pci_device_id *ids)
 	WARN_ON(in_interrupt());
 	while (ids->vendor || ids->subvendor || ids->class_mask) {
 		found = pci_get_dev_by_id(ids, NULL);
-		if (found)
-			goto exit;
+		if (found) {
+			pci_dev_put(found);
+			return 1;
+		}
 		ids++;
 	}
-exit:
-	if (found)
-		return 1;
+
 	return 0;
 }
 EXPORT_SYMBOL(pci_dev_present);
-- 
1.7.10.4