From patchwork Mon Sep 30 21:59:04 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Niklas_S=C3=B6derlund?= X-Patchwork-Id: 2073 Return-Path: Received: from vsp-unauthed02.binero.net (vsp-unauthed02.binero.net [195.74.38.227]) by lancelot.ideasonboard.com (Postfix) with ESMTPS id D520D61656 for ; Mon, 30 Sep 2019 23:59:50 +0200 (CEST) X-Halon-ID: 8fc3d3cc-e3cd-11e9-bdc3-005056917a89 Authorized-sender: niklas@soderlund.pp.se Received: from bismarck.berto.se (unknown [84.172.88.101]) by bin-vsp-out-01.atm.binero.net (Halon) with ESMTPA id 8fc3d3cc-e3cd-11e9-bdc3-005056917a89; Mon, 30 Sep 2019 23:59:23 +0200 (CEST) From: =?utf-8?q?Niklas_S=C3=B6derlund?= To: libcamera-devel@lists.libcamera.org Date: Mon, 30 Sep 2019 23:59:04 +0200 Message-Id: <20190930215906.1058301-2-niklas.soderlund@ragnatech.se> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20190930215906.1058301-1-niklas.soderlund@ragnatech.se> References: <20190930215906.1058301-1-niklas.soderlund@ragnatech.se> MIME-Version: 1.0 Subject: [libcamera-devel] [PATCH v3 1/3] qcam: Fix unregister of not registered timer X-BeenThere: libcamera-devel@lists.libcamera.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 30 Sep 2019 21:59:51 -0000 If an unregistered timer is given to QtEventDispatcher::unregisterTimer() an error is printed and Qt gets confused and locks up. Fix this by following the libcamera documentation that passing a unregistered timer is a no-op. Signed-off-by: Niklas Söderlund Reviewed-by: Laurent Pinchart --- src/qcam/qt_event_dispatcher.cpp | 3 +++ 1 file changed, 3 insertions(+) diff --git a/src/qcam/qt_event_dispatcher.cpp b/src/qcam/qt_event_dispatcher.cpp index 5ba451bf88cef6e8..98d2472c37856642 100644 --- a/src/qcam/qt_event_dispatcher.cpp +++ b/src/qcam/qt_event_dispatcher.cpp @@ -120,6 +120,9 @@ void QtEventDispatcher::registerTimer(Timer *timer) void QtEventDispatcher::unregisterTimer(Timer *timer) { auto it = timerIds_.find(timer); + if (it == timerIds_.end()) + return; + timers_.erase(it->second); killTimer(it->second); timerIds_.erase(it);