[libvirt] [PATCH v3 1/9] Implement virPCIIsKnownStub function

[Shivaprasad G Bhat]

The checks to knwon stubs can be easily done having this
implementation.

Signed-off-by: Shivaprasad G Bhat <sbhat at linux.vnet.ibm.com>
---
 src/util/virpci.c |   28 ++++++++++++++++++----------
 1 file changed, 18 insertions(+), 10 deletions(-)

diff --git a/src/util/virpci.c b/src/util/virpci.c
index 35b1459..bff37d7 100644
--- a/src/util/virpci.c
+++ b/src/util/virpci.c
@@ -1080,6 +1080,23 @@ static const char *virPCIKnownStubs[] = {
     NULL
 };
 
+static bool
+virPCIIsKnownStub(char *driver)
+{
+    const char **stubTest;
+    bool ret = false;
+
+    for (stubTest = virPCIKnownStubs; *stubTest != NULL; stubTest++) {
+        if (STREQ_NULLABLE(driver, *stubTest)) {
+            ret = true;
+            VIR_DEBUG("Found stub driver %s", *stubTest);
+            break;
+        }
+    }
+
+    return ret;
+}
+
 static int
 virPCIDeviceUnbindFromStub(virPCIDevicePtr dev)
 {
@@ -1087,8 +1104,6 @@ virPCIDeviceUnbindFromStub(virPCIDevicePtr dev)
     char *drvdir = NULL;
     char *path = NULL;
     char *driver = NULL;
-    const char **stubTest;
-    bool isStub = false;
 
     /* If the device is currently bound to one of the "well known"
      * stub drivers, then unbind it, otherwise ignore it.
@@ -1105,14 +1120,7 @@ virPCIDeviceUnbindFromStub(virPCIDevicePtr dev)
         goto remove_slot;
 
     /* If the device isn't bound to a known stub, skip the unbind. */
-    for (stubTest = virPCIKnownStubs; *stubTest != NULL; stubTest++) {
-        if (STREQ(driver, *stubTest)) {
-            isStub = true;
-            VIR_DEBUG("Found stub driver %s", *stubTest);
-            break;
-        }
-    }
-    if (!isStub)
+    if (!virPCIIsKnownStub(driver))
         goto remove_slot;
 
     if (virPCIDeviceUnbind(dev, dev->reprobe) < 0)