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| author | Lorenz Meier <lm@inf.ethz.ch> | 2013-03-01 09:43:40 +0100 |
|---|---|---|
| committer | Lorenz Meier <lm@inf.ethz.ch> | 2013-03-01 09:43:40 +0100 |
| commit | b7a510dfcb60708d8622d51d18c9fc83a5d32786 (patch) | |
| tree | 2c3b687dee75aeec54dcab705ec6a2dc747c3320 /apps | |
| parent | a35d214d9860f92880cdecc783b17d96169aab92 (diff) | |
| parent | eb9930de25c5d4da3df72dfd9c386572c1a76ee0 (diff) | |
| download | px4-firmware-b7a510dfcb60708d8622d51d18c9fc83a5d32786.tar.gz px4-firmware-b7a510dfcb60708d8622d51d18c9fc83a5d32786.tar.bz2 px4-firmware-b7a510dfcb60708d8622d51d18c9fc83a5d32786.zip | |
Merge branch 'master' of github.com:PX4/Firmware into px4io-i2c
Diffstat (limited to 'apps')
| -rw-r--r-- | apps/uORB/uORB.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/apps/uORB/uORB.cpp b/apps/uORB/uORB.cpp index 532e54b8e..41f399f2c 100644 --- a/apps/uORB/uORB.cpp +++ b/apps/uORB/uORB.cpp @@ -429,6 +429,10 @@ ORBDevNode::appears_updated(SubscriberData *sd) /* avoid racing between interrupt and non-interrupt context calls */ irqstate_t state = irqsave(); + /* check if this topic has been published yet, if not bail out */ + if (_data == nullptr) + ret = false; + /* * If the subscriber's generation count matches the update generation * count, there has been no update from their perspective; if they |