[PATCH v4 05/10] Split reprobe action from the virPCIUnbindFromStub into a new function

[Shivaprasad G Bhat <sbhat@xxxxxxxxxxxxxxxxxx>]

The reprobe needs to be called multiple times for vfio devices for each
device in the iommu group in future patch. So split the reprobe into a
new function. No functional change.

Signed-off-by: Shivaprasad G Bhat <sbhat@xxxxxxxxxxxxxxxxxx>
---
 src/util/virpci.c |   47 +++++++++++++++++++++++++++++++----------------
 1 file changed, 31 insertions(+), 16 deletions(-)

diff --git a/src/util/virpci.c b/src/util/virpci.c
index 89e69e2..febf100 100644
--- a/src/util/virpci.c
+++ b/src/util/virpci.c
@@ -1099,6 +1099,36 @@ virPCIIsKnownStub(char *driver)
 }
 
 static int
+virPCIDeviceReprobeHostDriver(virPCIDevicePtr dev,
+                              const char *driver,
+                              const char *drvdir)
+{
+    char *path = NULL;
+    int ret = -1;
+
+    /* Trigger a re-probe of the device is not in the stub's dynamic
+     * ID table. If the stub is available, but 'remove_id' isn't
+     * available, then re-probing would just cause the device to be
+     * re-bound to the stub.
+     */
+    if (driver && !(path = virPCIDriverFile(driver, "remove_id")))
+        goto cleanup;
+
+    if (!driver || !virFileExists(drvdir) || virFileExists(path)) {
+        if (virFileWriteStr(PCI_SYSFS "drivers_probe", dev->name, 0) < 0) {
+            virReportSystemError(errno,
+                                 _("Failed to trigger a re-probe for PCI device '%s'"),
+                                 dev->name);
+            goto cleanup;
+        }
+    }
+    ret = 0;
+ cleanup:
+    VIR_FREE(path);
+    return ret;
+}
+
+static int
 virPCIDeviceUnbindFromStub(virPCIDevicePtr dev)
 {
     int result = -1;
@@ -1150,24 +1180,9 @@ virPCIDeviceUnbindFromStub(virPCIDevicePtr dev)
         goto cleanup;
     }
 
-    /* Trigger a re-probe of the device is not in the stub's dynamic
-     * ID table. If the stub is available, but 'remove_id' isn't
-     * available, then re-probing would just cause the device to be
-     * re-bound to the stub.
-     */
-    VIR_FREE(path);
-    if (driver && !(path = virPCIDriverFile(driver, "remove_id")))
+    if (virPCIDeviceReprobeHostDriver(dev, driver, drvdir) < 0)
         goto cleanup;
 
-    if (!driver || !virFileExists(drvdir) || virFileExists(path)) {
-        if (virFileWriteStr(PCI_SYSFS "drivers_probe", dev->name, 0) < 0) {
-            virReportSystemError(errno,
-                                 _("Failed to trigger a re-probe for PCI device '%s'"),
-                                 dev->name);
-            goto cleanup;
-        }
-    }
-
     result = 0;
 
  cleanup:

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