diff --git a/drm/DrmDevice.cpp b/drm/DrmDevice.cpp
index abc8edc..570b676 100644
--- a/drm/DrmDevice.cpp
+++ b/drm/DrmDevice.cpp
@@ -195,7 +195,7 @@
     crtcs_.emplace_back(std::move(crtc));
   }
 
-  std::vector<int> possible_clones;
+  std::vector<uint32_t> possible_clones;
   for (int i = 0; !ret && i < res->count_encoders; ++i) {
     drmModeEncoderPtr e = drmModeGetEncoder(fd(), res->encoders[i]);
     if (!e) {
diff --git a/drm/DrmEventListener.cpp b/drm/DrmEventListener.cpp
index b303653..53e7032 100644
--- a/drm/DrmEventListener.cpp
+++ b/drm/DrmEventListener.cpp
@@ -84,7 +84,7 @@
 
 void DrmEventListener::UEventHandler() {
   char buffer[1024];
-  int ret = 0;
+  ssize_t ret = 0;
 
   struct timespec ts {};
 
@@ -93,7 +93,7 @@
   if (!ret)
     timestamp = ts.tv_sec * 1000 * 1000 * 1000 + ts.tv_nsec;
   else
-    ALOGE("Failed to get monotonic clock on hotplug %d", ret);
+    ALOGE("Failed to get monotonic clock on hotplug %zd", ret);
 
   while (true) {
     ret = read(uevent_fd_.Get(), &buffer, sizeof(buffer));
@@ -101,7 +101,7 @@
       return;
 
     if (ret < 0) {
-      ALOGE("Got error reading uevent %d", ret);
+      ALOGE("Got error reading uevent %zd", ret);
       return;
     }
 
diff --git a/drm/DrmMode.cpp b/drm/DrmMode.cpp
index dd25758..c714458 100644
--- a/drm/DrmMode.cpp
+++ b/drm/DrmMode.cpp
@@ -121,7 +121,7 @@
 
 float DrmMode::v_refresh() const {
   // Always recalculate refresh to report correct float rate
-  return clock_ / (float)(v_total_ * h_total_) * 1000.0F;
+  return static_cast<float>(clock_) / (float)(v_total_ * h_total_) * 1000.0F;
 }
 
 uint32_t DrmMode::flags() const {
diff --git a/drm/VSyncWorker.cpp b/drm/VSyncWorker.cpp
index 25eeeab..1c0de21 100644
--- a/drm/VSyncWorker.cpp
+++ b/drm/VSyncWorker.cpp
@@ -104,7 +104,8 @@
     ALOGW("Vsync worker active with conn=%p refresh=%f\n", conn,
           conn ? conn->active_mode().v_refresh() : 0.0F);
 
-  int64_t phased_timestamp = GetPhasedVSync(kOneSecondNs / refresh,
+  int64_t phased_timestamp = GetPhasedVSync(kOneSecondNs /
+                                                static_cast<int>(refresh),
                                             vsync.tv_sec * kOneSecondNs +
                                                 vsync.tv_nsec);
   vsync.tv_sec = phased_timestamp / kOneSecondNs;