From: kibak.yoon <kibak.yoon@samsung.com>
Date: Fri, 14 Apr 2017 03:24:47 +0000 (+0900)
Subject: sensord: add defensive code for blocking issue
X-Git-Tag: accepted/tizen/unified/20170414.164053^2~3
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=c13290dcc185dd17aea4c4f00c443eba07ec445e;p=platform%2Fcore%2Fsystem%2Fsensord.git

sensord: add defensive code for blocking issue

- this issue is related to hrm_raw sensor device driver

Change-Id: Ib75c56b7847b4afe8aeb3a14609168a47a669b64
Signed-off-by: kibak.yoon <kibak.yoon@samsung.com>
---

diff --git a/src/server/physical_sensor_handler.cpp b/src/server/physical_sensor_handler.cpp
index 3ee22b7..85a5515 100644
--- a/src/server/physical_sensor_handler.cpp
+++ b/src/server/physical_sensor_handler.cpp
@@ -75,11 +75,12 @@ int physical_sensor_handler::get_poll_fd(void)
 
 int physical_sensor_handler::read_fd(std::vector<uint32_t> &ids)
 {
+	retv_if(observer_count() == 0, OP_ERROR);
+	retv_if(!m_device, -EINVAL);
+
 	int size;
 	uint32_t *_ids;
 
-	retv_if(!m_device, -EINVAL);
-
 	size = m_device->read_fd(&_ids);
 	retv_if(size == 0, -ENODATA);