follows the advice of -Wsign-compare
Bug: 181177782
Test: None
Change-Id: I6c53a243639d6b086dc676995d83286d034d1083
diff --git a/fs_mgr/tools/dmuserd.cpp b/fs_mgr/tools/dmuserd.cpp
index e50a4a2..6b68b28 100644
--- a/fs_mgr/tools/dmuserd.cpp
+++ b/fs_mgr/tools/dmuserd.cpp
@@ -81,7 +81,7 @@
ssize_t total = 0;
ssize_t once;
- while (total < len) {
+ while (total < static_cast<ssize_t>(len)) {
once = write(fd, buf_c + total, len - total);
if (once < 0) return once;
if (once == 0) {
@@ -99,7 +99,7 @@
ssize_t total = 0;
ssize_t once;
- while (total < len) {
+ while (total < static_cast<ssize_t>(len)) {
once = read(fd, buf_c + total, len - total);
if (once < 0) return once;
if (once == 0) {