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Merge branch 'master' of github.com:PX4/Firmware into px4io-i2c

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Lorenz Meier
2013-03-01 09:43:40 +01:00
parent a35d214d98 eb9930de25
commit b7a510dfcb
1 changed files with 4 additions and 0 deletions
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apps/uORB/uORB.cpp
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@@ -429,6 +429,10 @@ ORBDevNode::appears_updated(SubscriberData *sd)
/* avoid racing between interrupt and non-interrupt context calls */ /* avoid racing between interrupt and non-interrupt context calls */
irqstate_t state = irqsave(); 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 * If the subscriber's generation count matches the update generation
* count, there has been no update from their perspective; if they * count, there has been no update from their perspective; if they