close file descriptor (#1353)

* close file descriptor * check return value
5 years ago · 2fc3247343
parent 789764945c
commit 2fc3247343
1 changed files with 5 additions and 2 deletions
--- a/selfdrive/common/framebuffer.cc
+++ b/selfdrive/common/framebuffer.cc
@ -126,8 +126,11 @@ extern "C" FramebufferState* framebuffer_init(

  // set brightness
  int brightness_fd = open(BACKLIGHT_CONTROL, O_RDWR);
-  const char brightness_level[] = BACKLIGHT_LEVEL;
-  write(brightness_fd, brightness_level, strlen(brightness_level));
+  if (brightness_fd != -1){
+    const char brightness_level[] = BACKLIGHT_LEVEL;
+    write(brightness_fd, brightness_level, strlen(brightness_level));
+    close(brightness_fd);
+  }

  if (out_w) *out_w = w;
  if (out_h) *out_h = h;