[PATCH 05/16] vfio/helpers: Make vfio_device_get_name() return bool

[Zhenzhong Duan]

This is to follow the coding standand in qapi/error.h to return bool
for bool-valued functions.

Suggested-by: Cédric Le Goater <clg@redhat.com>
Signed-off-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
---
 include/hw/vfio/vfio-common.h | 2 +-
 hw/vfio/ap.c                  | 2 +-
 hw/vfio/ccw.c                 | 2 +-
 hw/vfio/helpers.c             | 8 ++++----
 hw/vfio/pci.c                 | 2 +-
 hw/vfio/platform.c            | 5 ++---
 6 files changed, 10 insertions(+), 11 deletions(-)

diff --git a/include/hw/vfio/vfio-common.h b/include/hw/vfio/vfio-common.h
index fdce13f0f2..d9891c796f 100644
--- a/include/hw/vfio/vfio-common.h
+++ b/include/hw/vfio/vfio-common.h
@@ -280,7 +280,7 @@ int vfio_get_dirty_bitmap(const VFIOContainerBase 
*bcontainer, uint64_t iova,
                           uint64_t size, ram_addr_t ram_addr, Error **errp);
 
 /* Returns 0 on success, or a negative errno. */
-int vfio_device_get_name(VFIODevice *vbasedev, Error **errp);
+bool vfio_device_get_name(VFIODevice *vbasedev, Error **errp);
 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 d8a9615fee..c12531a788 100644
--- a/hw/vfio/ap.c
+++ b/hw/vfio/ap.c
@@ -158,7 +158,7 @@ static void vfio_ap_realize(DeviceState *dev, Error **errp)
     VFIOAPDevice *vapdev = VFIO_AP_DEVICE(dev);
     VFIODevice *vbasedev = &vapdev->vdev;
 
-    if (vfio_device_get_name(vbasedev, errp) < 0) {
+    if (!vfio_device_get_name(vbasedev, errp)) {
         return;
     }
 
diff --git a/hw/vfio/ccw.c b/hw/vfio/ccw.c
index 1f578a3c75..8850ca17c8 100644
--- a/hw/vfio/ccw.c
+++ b/hw/vfio/ccw.c
@@ -588,7 +588,7 @@ static void vfio_ccw_realize(DeviceState *dev, Error **errp)
         }
     }
 
-    if (vfio_device_get_name(vbasedev, errp) < 0) {
+    if (!vfio_device_get_name(vbasedev, errp)) {
         return;
     }
 
diff --git a/hw/vfio/helpers.c b/hw/vfio/helpers.c
index 93e6fef6de..a69b4411e5 100644
--- a/hw/vfio/helpers.c
+++ b/hw/vfio/helpers.c
@@ -605,7 +605,7 @@ bool vfio_has_region_cap(VFIODevice *vbasedev, int region, 
uint16_t cap_type)
     return ret;
 }
 
-int vfio_device_get_name(VFIODevice *vbasedev, Error **errp)
+bool vfio_device_get_name(VFIODevice *vbasedev, Error **errp)
 {
     ERRP_GUARD();
     struct stat st;
@@ -614,7 +614,7 @@ int vfio_device_get_name(VFIODevice *vbasedev, Error **errp)
         if (stat(vbasedev->sysfsdev, &st) < 0) {
             error_setg_errno(errp, errno, "no such host device");
             error_prepend(errp, VFIO_MSG_PREFIX, vbasedev->sysfsdev);
-            return -errno;
+            return false;
         }
         /* User may specify a name, e.g: VFIO platform device */
         if (!vbasedev->name) {
@@ -623,7 +623,7 @@ int vfio_device_get_name(VFIODevice *vbasedev, Error **errp)
     } else {
         if (!vbasedev->iommufd) {
             error_setg(errp, "Use FD passing only with iommufd backend");
-            return -EINVAL;
+            return false;
         }
         /*
          * Give a name with fd so any function printing out vbasedev->name
@@ -634,7 +634,7 @@ int vfio_device_get_name(VFIODevice *vbasedev, Error **errp)
         }
     }
 
-    return 0;
+    return true;
 }
 
 void vfio_device_set_fd(VFIODevice *vbasedev, const char *str, Error **errp)
diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c
index 358da4497b..aad012c348 100644
--- a/hw/vfio/pci.c
+++ b/hw/vfio/pci.c
@@ -2999,7 +2999,7 @@ static void vfio_realize(PCIDevice *pdev, Error **errp)
                             vdev->host.slot, vdev->host.function);
     }
 
-    if (vfio_device_get_name(vbasedev, errp) < 0) {
+    if (!vfio_device_get_name(vbasedev, errp)) {
         return;
     }
 
diff --git a/hw/vfio/platform.c b/hw/vfio/platform.c
index 3233ca8691..e1a32863d9 100644
--- a/hw/vfio/platform.c
+++ b/hw/vfio/platform.c
@@ -545,9 +545,8 @@ static int vfio_base_device_init(VFIODevice *vbasedev, 
Error **errp)
                                              vbasedev->name);
     }
 
-    ret = vfio_device_get_name(vbasedev, errp);
-    if (ret) {
-        return ret;
+    if (!vfio_device_get_name(vbasedev, errp)) {
+        return -EINVAL;
     }
 
     if (!vfio_attach_device(vbasedev->name, vbasedev,
-- 
2.34.1