| Message ID | 20221213093802.704177-3-paul.elder@ideasonboard.com |
|---|---|
| State | New |
| Headers | show |
| Series |
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| Related | show |
diff --git a/Documentation/guides/application-developer.rst b/Documentation/guides/application-developer.rst index 1b2d7727..26d5fc1d 100644 --- a/Documentation/guides/application-developer.rst +++ b/Documentation/guides/application-developer.rst @@ -490,6 +490,10 @@ device: request->reuse(Request::ReuseBuffers); camera->queueRequest(request); +Note that a request should only be marked for re-use if and only if the request +will be re-queued to the camera device. Marking a request for re-use and not +queuing it causes undefined behavior. + Request queueing ----------------
It recently came to our attention that marking a Request for reuse and *not* queueing it causes segfaults at Request deallocation time, if it happens after framebuffer deallocation. Add a note to warn against this in the application-developer documentation. Signed-off-by: Paul Elder <paul.elder@ideasonboard.com> --- Documentation/guides/application-developer.rst | 4 ++++ 1 file changed, 4 insertions(+)