From 5679c844de0a15a38551e2cf46952fc48d62d00f Mon Sep 17 00:00:00 2001
From: Cole Robinson <crobinso@redhat.com>
Date: Fri, 30 Apr 2010 11:44:19 -0400
Subject: [PATCH] pci: Give an explicit error if device not found

v2: Use intended F_OK. Drop devdir param, just check dev->path for device
existence.

v3: Use virReportSystemError, include dev->path in error message.
---
 src/util/pci.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/util/pci.c b/src/util/pci.c
index 81193b7bb1..a1bd8e3033 100644
--- a/src/util/pci.c
+++ b/src/util/pci.c
@@ -1046,6 +1046,14 @@ pciGetDevice(unsigned domain,
     snprintf(dev->path, sizeof(dev->path),
              PCI_SYSFS "devices/%s/config", dev->name);
 
+    if (access(dev->path, F_OK) != 0) {
+        virReportSystemError(errno,
+                             _("Device %s not found: could not access %s"),
+                             dev->name, dev->path);
+        pciFreeDevice(dev);
+        return NULL;
+    }
+
     vendor  = pciReadDeviceID(dev, "vendor");
     product = pciReadDeviceID(dev, "device");
 
-- 
2.47.2