patches/frameworks/av/0004-Kirin-Remove-lock-to-prevent-self-lock.patch

From 05646ef62dfeb4286ce99ae50edd7c49510248ba Mon Sep 17 00:00:00 2001
From: Pierre-Hugues Husson <phh@phh.me>
Date: Sun, 19 Aug 2018 22:59:06 +0200
Subject: [PATCH 4/5] Kirin:: Remove lock to prevent self-lock

With Huawei Camera HAL, we get the following call order:
cameraserver CameraService::enumerateProviders (*)
=> HAL ICameraProvider::getVendorTags
=> HAL ICameraProviderCallback::cameraDeviceStatusChange
=> cameraserver CameraService::addState
=> cameraserver CameraService::updateCameraNumAndIds (*)

The two functions marked with (*) take mServiceLock
Hence the safe-lock
---
 services/camera/libcameraservice/CameraService.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/services/camera/libcameraservice/CameraService.cpp b/services/camera/libcameraservice/CameraService.cpp
index de0fac5..e04b359 100644
--- a/services/camera/libcameraservice/CameraService.cpp
+++ b/services/camera/libcameraservice/CameraService.cpp
@@ -218,7 +218,7 @@ void CameraService::onNewProviderRegistered() {
 }
 
 void CameraService::updateCameraNumAndIds() {
-    Mutex::Autolock l(mServiceLock);
+    //Mutex::Autolock l(mServiceLock);
     mNumberOfCameras = mCameraProviderManager->getCameraCount();
     mNormalDeviceIds =
             mCameraProviderManager->getAPI1CompatibleCameraDeviceIds();
-- 
2.7.4