sd-device: add a brief comment in device_cache_sysattr_value()

2021-02-21 04:40:23 +09:00
parent acfc2a1d15
commit 66efcbb149
1 changed files with 1 additions and 0 deletions
@@ -1829,6 +1829,7 @@ static int device_cache_sysattr_value(sd_device *device, const char *key, char *
        /* This takes the reference of the input value. The input value may be NULL.
         * This replaces the value if it already exists. */

+        /* First, remove the old cache entry. So, we do not need to clear cache on error. */
        old_value = hashmap_remove2(device->sysattr_values, key, (void **) &new_key);
        if (!new_key) {
                new_key = strdup(key);