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libcamera: pipeline: Fix double release of media devices

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Media devices are acquired in the match() function of pipeline handlers,
and explicitly released if no match is found. The pipeline handler is
then deleted, which causes a second release of the media device in the
destructor. Fix this by removing the explicit release in the match()
function.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Acked-by: Jacopo Mondi <jacopo@jmondi.org>
This commit is contained in:
Laurent Pinchart
2019-02-28 12:39:46 +02:00
parent 3ab7f65d6f
commit e6eff721d7
3 changed files with 12 additions and 22 deletions
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28
src/libcamera/pipeline/ipu3/ipu3.cpp
View File

@@ -278,19 +278,20 @@ bool PipelineHandlerIPU3::match(DeviceEnumerator *enumerator)
imgu_dm.add("ipu3-imgu 1 viewfinder");
imgu_dm.add("ipu3-imgu 1 3a stat");
/*
* It is safe to acquire both media devices at this point as
* DeviceEnumerator::search() skips the busy ones for us.
*/
cio2_ = enumerator->search(cio2_dm);
if (!cio2_)
return false;
cio2_->acquire();
imgu_ = enumerator->search(imgu_dm);
if (!imgu_)
return false;
/*
* It is safe to acquire both media devices at this point as
* DeviceEnumerator::search() skips the busy ones for us.
*/
cio2_->acquire();
imgu_->acquire();
/*
@@ -301,25 +302,18 @@ bool PipelineHandlerIPU3::match(DeviceEnumerator *enumerator)
* not need to be changed after.
*/
if (cio2_->open())
goto error_release_mdev;
return false;
if (cio2_->disableLinks())
goto error_close_cio2;
if (cio2_->disableLinks()) {
cio2_->close();
return false;
}
registerCameras();
cio2_->close();
return true;
error_close_cio2:
cio2_->close();
error_release_mdev:
cio2_->release();
imgu_->release();
return false;
}
/*

1
src/libcamera/pipeline/uvcvideo.cpp
View File

@@ -167,7 +167,6 @@ bool PipelineHandlerUVC::match(DeviceEnumerator *enumerator)
if (!video_)
LOG(UVC, Error) << "Could not find a default video device";
media_->release();
return false;
}

5
src/libcamera/pipeline/vimc.cpp
View File

@@ -165,11 +165,8 @@ bool PipelineHandlerVimc::match(DeviceEnumerator *enumerator)
media_->acquire();
video_ = new V4L2Device(media_->getEntityByName("Raw Capture 1"));
if (video_->open()) {
media_->release();
if (video_->open())
return false;
}
std::set<Stream *> streams{ &stream_ };
std::shared_ptr<Camera> camera = Camera::create(this, "VIMC Sensor B",