libcamera: Always check return value of MediaDevice::acquire()

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 <niklas.soderlund@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

1 files changed, 5 insertions, 1 deletions

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 "