diff --git a/src/platformdata/CameraSensorsParser.cpp b/src/platformdata/CameraSensorsParser.cpp
index 4212ae49..791f9555 100644
--- a/src/platformdata/CameraSensorsParser.cpp
+++ b/src/platformdata/CameraSensorsParser.cpp
@@ -1106,7 +1106,7 @@ void CameraSensorsParser::updateNVMDir() {
 void CameraSensorsParser::parseGenericStaticMetaData(const Json::Value& node) {
     auto keyNames = node.getMemberNames();
     for (const auto& key : keyNames) {
-        int tagType;
+        int tagType = -1;
         auto name = key;
 
         if (mCurCam->mStaticMetadata.mStaticMetadataToType.count(name))
diff --git a/src/v4l2/MediaControl.cpp b/src/v4l2/MediaControl.cpp
index 807d4f4b..d62dcd0b 100644
--- a/src/v4l2/MediaControl.cpp
+++ b/src/v4l2/MediaControl.cpp
@@ -503,12 +503,12 @@ int MediaControl::getDevnameFromSysfs(MediaEntity* entity) {
         return -EINVAL;
     }
 
-    ret = readlink(sysName, target, MAX_TARGET_NAME);
+    ret = readlink(sysName, target, sizeof(target) - 1);
     if (ret <= 0) {
         LOGE("readlink sysName %s failed ret %d.", sysName, ret);
         return -EINVAL;
     }
-    target[MAX_TARGET_NAME - 1] = '\0';
+    target[ret] = '\0';
 
     char* d = strrchr(target, '/');
     if (!d) {