From 131e4dc69d301c2f1651efdfe581ae5e799a5dda Mon Sep 17 00:00:00 2001
From: Jiuzhu Dong <dongjiuzhu1@xiaomi.com>
Date: Tue, 28 Jun 2022 15:53:43 +0800
Subject: [PATCH] system/uorb: simply orb_check by SNIOC_UPDATED

Signed-off-by: Jiuzhu Dong <dongjiuzhu1@xiaomi.com>
---
 system/uorb/uORB/uORB.c | 16 +---------------
 1 file changed, 1 insertion(+), 15 deletions(-)

diff --git a/system/uorb/uORB/uORB.c b/system/uorb/uORB/uORB.c
index 953e3b26e..5ab3b2ca3 100644
--- a/system/uorb/uORB/uORB.c
+++ b/system/uorb/uORB/uORB.c
@@ -25,7 +25,6 @@
 #include <errno.h>
 #include <fcntl.h>
 #include <limits.h>
-#include <poll.h>
 #include <stdio.h>
 #include <sys/ioctl.h>
 #include <unistd.h>
@@ -228,20 +227,7 @@ int orb_get_state(int fd, FAR struct orb_state *state)
 
 int orb_check(int fd, FAR bool *updated)
 {
-  struct pollfd fds[1];
-  int ret;
-
-  fds[0].fd     = fd;
-  fds[0].events = POLLIN;
-
-  ret = poll(fds, 1, 0);
-  if (ret < 0)
-    {
-      return -1;
-    }
-
-  *updated = (fds[0].revents & POLLIN) > 0;
-  return 0;
+  return ioctl(fd, SNIOC_UPDATED, (unsigned long)(uintptr_t)updated);
 }
 
 int orb_ioctl(int fd, int cmd, unsigned long arg)