commit 857088b39d7cfe3158e49840093b41e35df84df4
author Tommy Chiu <tommychiu@google.com> Wed Jan 02 23:43:15 2019 -0800
committer android-build-merger <android-build-merger@google.com> Wed Jan 02 23:43:15 2019 -0800
tree 335d69511dfe5c0d321649116dfa2327b942ac82
parent 0ef969cbefc8c61b1dd0fa0a9adf2eee9d2720d3
parent 6ab7f067c31adbf1300add2e3c1a949917589d7d

hwc2: Ignore Notify to non-existance file node
am: 6ab7f067c3

Change-Id: Idcdc3e2c7421d3a56b887ad6cf433704bf81b7cc

sdm/libs/hwc2/hwc_display_primary.cpp

diff --git a/sdm/libs/hwc2/hwc_display_primary.cpp b/sdm/libs/hwc2/hwc_display_primary.cpp
index b1eeecd..6eaf11d 100644
--- a/sdm/libs/hwc2/hwc_display_primary.cpp
+++ b/sdm/libs/hwc2/hwc_display_primary.cpp
@@ -73,6 +73,10 @@
 
 DisplayError HWCDisplayPrimary::PMICInterface::Notify(bool secure_display_start) {
   std::string str_sd_start = secure_display_start ? std::to_string(1) : std::to_string(0);
+  if (fd_lcd_bias_ < 0 || fd_wled_ < 0) {
+    DLOGI("Ignore notify because fd_lcd_bias_ or fd_wled_ open failed");
+    return kErrorNotSupported;
+  }
   ssize_t err = ::pwrite(fd_lcd_bias_, str_sd_start.c_str(), str_sd_start.length(), 0);
   if (err <= 0) {
     DLOGE("Write failed for lcd_bias, Error = %s", strerror(errno));