From: Egbert Eich <eich@freedesktop.org>
Date: Mon, 4 Jul 2011 05:38:33 +0000 (+0200)
Subject: PCI: set correct mask value when matching for bridges.
X-Git-Tag: libpciaccess-0.13.2~19
X-Git-Url: http://review.tizen.org/git/?p=platform%2Fupstream%2Flibpciaccess.git;a=commitdiff_plain;h=0ad7b5c548ecf409a1fdd835bde52a8cf5371b7a

PCI: set correct mask value when matching for bridges.

The mask must not be zero otherwise the matching condition will never
be true: ((val & mask) == set).

Signed-off-by: Egbert Eich <eich@freedesktop.org>
Reviewed-by: Guillem Jover <guillem@hadrons.org>
---

diff --git a/src/common_bridge.c b/src/common_bridge.c
index 4a067b9..82a13fd 100644
--- a/src/common_bridge.c
+++ b/src/common_bridge.c
@@ -321,6 +321,8 @@ pci_device_get_bridge_buses(struct pci_device * dev, int *primary_bus,
 
 #define PCI_CLASS_BRIDGE 0x06
 #define PCI_SUBCLASS_BRIDGE_PCI 0x04
+#define PCI_CLASS_MASK 0xFF
+#define PCI_SUBCLASS_MASK 0xFF
 
 struct pci_device *
 pci_device_get_parent_bridge(struct pci_device *dev)
@@ -328,7 +330,7 @@ pci_device_get_parent_bridge(struct pci_device *dev)
     struct pci_id_match bridge_match = {
         PCI_MATCH_ANY, PCI_MATCH_ANY, PCI_MATCH_ANY, PCI_MATCH_ANY,
         (PCI_CLASS_BRIDGE << 16) | (PCI_SUBCLASS_BRIDGE_PCI << 8),
-        0
+        (PCI_CLASS_MASK << 16) | (PCI_SUBCLASS_MASK << 8)
     };
 
     struct pci_device *bridge;