[PATCH V5 27/38] vfio/iommufd: add vfio_device_free_name

[Steve Sistare <steven.sistare@oracle.com>]

Define vfio_device_free_name to free the name created by
vfio_device_get_name.  A subsequent patch will do more there.
No functional change.

Signed-off-by: Steve Sistare <steven.sistare@oracle.com>
---
 include/hw/vfio/vfio-device.h | 1 +
 hw/vfio/ap.c                  | 2 +-
 hw/vfio/ccw.c                 | 2 +-
 hw/vfio/device.c              | 5 +++++
 hw/vfio/pci.c                 | 2 +-
 hw/vfio/platform.c            | 2 +-
 6 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/include/hw/vfio/vfio-device.h b/include/hw/vfio/vfio-device.h
index 6eb6f21..321b442 100644
--- a/include/hw/vfio/vfio-device.h
+++ b/include/hw/vfio/vfio-device.h
@@ -227,6 +227,7 @@ int vfio_device_get_irq_info(VFIODevice *vbasedev, int index,
 
 /* Returns 0 on success, or a negative errno. */
 bool vfio_device_get_name(VFIODevice *vbasedev, Error **errp);
+void vfio_device_free_name(VFIODevice *vbasedev);
 void vfio_device_set_fd(VFIODevice *vbasedev, const char *str, Error **errp);
 void vfio_device_init(VFIODevice *vbasedev, int type, VFIODeviceOps *ops,
                       DeviceState *dev, bool ram_discard);
diff --git a/hw/vfio/ap.c b/hw/vfio/ap.c
index 785c0a0..013bd59 100644
--- a/hw/vfio/ap.c
+++ b/hw/vfio/ap.c
@@ -180,7 +180,7 @@ static void vfio_ap_realize(DeviceState *dev, Error **errp)
 
 error:
     error_prepend(errp, VFIO_MSG_PREFIX, vbasedev->name);
-    g_free(vbasedev->name);
+    vfio_device_free_name(vbasedev);
 }
 
 static void vfio_ap_unrealize(DeviceState *dev)
diff --git a/hw/vfio/ccw.c b/hw/vfio/ccw.c
index cea9d6e..903b8b0 100644
--- a/hw/vfio/ccw.c
+++ b/hw/vfio/ccw.c
@@ -619,7 +619,7 @@ out_io_notifier_err:
 out_region_err:
     vfio_device_detach(vbasedev);
 out_attach_dev_err:
-    g_free(vbasedev->name);
+    vfio_device_free_name(vbasedev);
 out_unrealize:
     if (cdc->unrealize) {
         cdc->unrealize(cdev);
diff --git a/hw/vfio/device.c b/hw/vfio/device.c
index 71fa9f4..a3603f5 100644
--- a/hw/vfio/device.c
+++ b/hw/vfio/device.c
@@ -317,6 +317,11 @@ bool vfio_device_get_name(VFIODevice *vbasedev, Error **errp)
     return true;
 }
 
+void vfio_device_free_name(VFIODevice *vbasedev)
+{
+    g_clear_pointer(&vbasedev->name, g_free);
+}
+
 void vfio_device_set_fd(VFIODevice *vbasedev, const char *str, Error **errp)
 {
     ERRP_GUARD();
diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c
index b52c488..b4136432 100644
--- a/hw/vfio/pci.c
+++ b/hw/vfio/pci.c
@@ -2966,7 +2966,7 @@ static void vfio_pci_put_device(VFIOPCIDevice *vdev)
 
     vfio_device_detach(&vdev->vbasedev);
 
-    g_free(vdev->vbasedev.name);
+    vfio_device_free_name(&vdev->vbasedev);
     g_free(vdev->msix);
 }
 
diff --git a/hw/vfio/platform.c b/hw/vfio/platform.c
index 9a21f2e..5c1795a 100644
--- a/hw/vfio/platform.c
+++ b/hw/vfio/platform.c
@@ -530,7 +530,7 @@ static bool vfio_base_device_init(VFIODevice *vbasedev, Error **errp)
 {
     /* @fd takes precedence over @sysfsdev which takes precedence over @host */
     if (vbasedev->fd < 0 && vbasedev->sysfsdev) {
-        g_free(vbasedev->name);
+        vfio_device_free_name(vbasedev);
         vbasedev->name = g_path_get_basename(vbasedev->sysfsdev);
     } else if (vbasedev->fd < 0) {
         if (!vbasedev->name || strchr(vbasedev->name, '/')) {
-- 
1.8.3.1