X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Flibudev%2Flibudev-device.c;h=9f80f56d4206b9b5e90156fb44c80615c88900ae;hb=7619683b46bddcf753786fd20581322da9825f99;hp=b5b07fc5de0cd7c90e1356a35c11ccf022ee683a;hpb=994e023433e020e2b3f683d5d1f2c974db580447;p=elogind.git

diff --git a/src/libudev/libudev-device.c b/src/libudev/libudev-device.c
index b5b07fc5d..9f80f56d4 100644
--- a/src/libudev/libudev-device.c
+++ b/src/libudev/libudev-device.c
@@ -538,6 +538,8 @@ int udev_device_read_db(struct udev_device *udev_device, const char *dbfile)
                 udev_dbg(udev_device->udev, "no db file to read %s: %m\n", dbfile);
                 return -errno;
         }
+
+        /* devices with a database entry are initialized */
         udev_device->is_initialized = true;
 
         while (fgets(line, sizeof(line), f)) {
@@ -645,7 +647,7 @@ struct udev_device *udev_device_new(struct udev *udev)
         if (udev == NULL)
                 return NULL;
 
-        udev_device = calloc(1, sizeof(struct udev_device));
+        udev_device = new0(struct udev_device, 1);
         if (udev_device == NULL)
                 return NULL;
         udev_device->refcount = 1;
@@ -808,7 +810,7 @@ _public_ struct udev_device *udev_device_new_from_device_id(struct udev *udev, c
                 sk = socket(PF_INET, SOCK_DGRAM, 0);
                 if (sk < 0)
                         return NULL;
-                memset(&ifr, 0x00, sizeof(struct ifreq));
+                memzero(&ifr, sizeof(struct ifreq));
                 ifr.ifr_ifindex = ifindex;
                 if (ioctl(sk, SIOCGIFNAME, &ifr) != 0) {
                         close(sk);
@@ -982,9 +984,8 @@ static struct udev_device *device_new_from_parent(struct udev_device *udev_devic
  * Find the next parent device, and fill in information from the sys
  * device and the udev database entry.
  *
- * The returned the device is not referenced. It is attached to the
- * child device, and will be cleaned up when the child device
- * is cleaned up.
+ * Returned device is not referenced. It is attached to the child
+ * device, and will be cleaned up when the child device is cleaned up.
  *
  * It is not necessarily just the upper level directory, empty or not
  * recognized sys directories are ignored.
@@ -1018,9 +1019,8 @@ _public_ struct udev_device *udev_device_get_parent(struct udev_device *udev_dev
  * If devtype is #NULL, only subsystem is checked, and any devtype will
  * match.
  *
- * The returned the device is not referenced. It is attached to the
- * child device, and will be cleaned up when the child device
- * is cleaned up.
+ * Returned device is not referenced. It is attached to the child
+ * device, and will be cleaned up when the child device is cleaned up.
  *
  * It can be called as many times as needed, without caring about
  * references.
@@ -1090,7 +1090,7 @@ _public_ struct udev_device *udev_device_ref(struct udev_device *udev_device)
  * Drop a reference of a udev device. If the refcount reaches zero,
  * the resources of the device will be released.
  *
- * Returns: the passed udev device if it has still an active reference, or #NULL otherwise.
+ * Returns: #NULL
  **/
 _public_ struct udev_device *udev_device_unref(struct udev_device *udev_device)
 {
@@ -1098,7 +1098,7 @@ _public_ struct udev_device *udev_device_unref(struct udev_device *udev_device)
                 return NULL;
         udev_device->refcount--;
         if (udev_device->refcount > 0)
-                return udev_device;
+                return NULL;
         if (udev_device->parent_device != NULL)
                 udev_device_unref(udev_device->parent_device);
         free(udev_device->syspath);