From 12053cf8e6a98104b6c765e1ac8a34b8f7a02eed Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Niklas=20S=C3=B6derlund?= Date: Sun, 14 Apr 2019 00:28:53 +0200 Subject: libcamera: Always check return value of MediaDevice::acquire() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit In preparation for adding more responsibility to MediaDevice::acquire() remove unneeded calls to acquire() and release(), and make sure all needed calls to acquire() are checked and acted on. Signed-off-by: Niklas Söderlund Reviewed-by: Laurent Pinchart --- src/libcamera/pipeline/ipu3/ipu3.cpp | 10 ++++------ src/libcamera/pipeline/uvcvideo.cpp | 3 ++- src/libcamera/pipeline/vimc.cpp | 3 ++- test/media_device/media_device_link_test.cpp | 6 +++++- test/v4l2_device/v4l2_device_test.cpp | 4 ---- test/v4l2_subdevice/v4l2_subdevice_test.cpp | 7 ------- 6 files changed, 13 insertions(+), 20 deletions(-) diff --git a/src/libcamera/pipeline/ipu3/ipu3.cpp b/src/libcamera/pipeline/ipu3/ipu3.cpp index 00416625..75e878af 100644 --- a/src/libcamera/pipeline/ipu3/ipu3.cpp +++ b/src/libcamera/pipeline/ipu3/ipu3.cpp @@ -614,21 +614,19 @@ 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. - */ cio2MediaDev_ = enumerator->search(cio2_dm); if (!cio2MediaDev_) return false; - cio2MediaDev_->acquire(); + if (!cio2MediaDev_->acquire()) + return false; imguMediaDev_ = enumerator->search(imgu_dm); if (!imguMediaDev_) return false; - imguMediaDev_->acquire(); + if (!imguMediaDev_->acquire()) + return false; /* * Disable all links that are enabled by default on CIO2, as camera diff --git a/src/libcamera/pipeline/uvcvideo.cpp b/src/libcamera/pipeline/uvcvideo.cpp index 5d2f1c98..e40b052f 100644 --- a/src/libcamera/pipeline/uvcvideo.cpp +++ b/src/libcamera/pipeline/uvcvideo.cpp @@ -183,7 +183,8 @@ bool PipelineHandlerUVC::match(DeviceEnumerator *enumerator) if (!media_) return false; - media_->acquire(); + if (!media_->acquire()) + return false; std::unique_ptr data = utils::make_unique(this); diff --git a/src/libcamera/pipeline/vimc.cpp b/src/libcamera/pipeline/vimc.cpp index cdf43770..7b6ebd4c 100644 --- a/src/libcamera/pipeline/vimc.cpp +++ b/src/libcamera/pipeline/vimc.cpp @@ -193,7 +193,8 @@ bool PipelineHandlerVimc::match(DeviceEnumerator *enumerator) if (!media_) return false; - media_->acquire(); + if (!media_->acquire()) + return false; std::unique_ptr data = utils::make_unique(this); diff --git a/test/media_device/media_device_link_test.cpp b/test/media_device/media_device_link_test.cpp index 58a55cdf..484d3691 100644 --- a/test/media_device/media_device_link_test.cpp +++ b/test/media_device/media_device_link_test.cpp @@ -51,7 +51,11 @@ class MediaDeviceLinkTest : public Test return TestSkip; } - dev_->acquire(); + if (!dev_->acquire()) { + cerr << "Unable to acquire media device " + << dev_->deviceNode() << endl; + return TestSkip; + } if (dev_->open()) { cerr << "Failed to open media device at " diff --git a/test/v4l2_device/v4l2_device_test.cpp b/test/v4l2_device/v4l2_device_test.cpp index 4225291b..833038d5 100644 --- a/test/v4l2_device/v4l2_device_test.cpp +++ b/test/v4l2_device/v4l2_device_test.cpp @@ -46,8 +46,6 @@ int V4L2DeviceTest::init() if (!media_) return TestSkip; - media_->acquire(); - MediaEntity *entity = media_->getEntityByName("vivid-000-vid-cap"); if (!entity) return TestSkip; @@ -61,8 +59,6 @@ int V4L2DeviceTest::init() void V4L2DeviceTest::cleanup() { - media_->release(); - capture_->streamOff(); capture_->releaseBuffers(); capture_->close(); diff --git a/test/v4l2_subdevice/v4l2_subdevice_test.cpp b/test/v4l2_subdevice/v4l2_subdevice_test.cpp index 72d5f725..5810ef3c 100644 --- a/test/v4l2_subdevice/v4l2_subdevice_test.cpp +++ b/test/v4l2_subdevice/v4l2_subdevice_test.cpp @@ -45,20 +45,16 @@ int V4L2SubdeviceTest::init() return TestSkip; } - media_->acquire(); - int ret = media_->open(); if (ret) { cerr << "Unable to open media device: " << media_->deviceNode() << ": " << strerror(ret) << endl; - media_->release(); return TestSkip; } MediaEntity *videoEntity = media_->getEntityByName("Scaler"); if (!videoEntity) { cerr << "Unable to find media entity 'Scaler'" << endl; - media_->release(); return TestFail; } @@ -67,7 +63,6 @@ int V4L2SubdeviceTest::init() if (ret) { cerr << "Unable to open video subdevice " << scaler_->entity()->deviceNode() << endl; - media_->release(); return TestSkip; } @@ -76,7 +71,5 @@ int V4L2SubdeviceTest::init() void V4L2SubdeviceTest::cleanup() { - media_->release(); - delete scaler_; } -- cgit v1.2.1