resmgr: add sanity checks

[android/external-libkmsxx.git] / kms++util / src / resourcemanager.cpp

diff --git a/kms++util/src/resourcemanager.cpp b/kms++util/src/resourcemanager.cpp
index 23a1480de2903ac2a07dee4196e65d069079fdf4..f751147799ececcc50f6ee8bcdd587dab3143324 100644 (file)
--- a/kms++util/src/resourcemanager.cpp
+++ b/kms++util/src/resourcemanager.cpp
@@ -101,6 +101,9 @@ Connector* ResourceManager::reserve_connector(const string& name)
 
 Connector* ResourceManager::reserve_connector(Connector* conn)
 {
+       if (!conn)
+               return nullptr;
+
        if (contains(m_reserved_connectors, conn))
                return nullptr;
 
@@ -110,6 +113,9 @@ Connector* ResourceManager::reserve_connector(Connector* conn)
 
 Crtc* ResourceManager::reserve_crtc(Connector* conn)
 {
+       if (!conn)
+               return nullptr;
+
        if (Crtc* crtc = conn->get_current_crtc()) {
                m_reserved_crtcs.push_back(crtc);
                return crtc;
@@ -128,6 +134,9 @@ Crtc* ResourceManager::reserve_crtc(Connector* conn)
 
 Plane* ResourceManager::reserve_plane(Crtc* crtc, PlaneType type, PixelFormat format)
 {
+       if (!crtc)
+               return nullptr;
+
        for (Plane* plane : crtc->get_possible_planes()) {
                if (plane->plane_type() == type)
                        continue;
@@ -147,6 +156,9 @@ Plane* ResourceManager::reserve_plane(Crtc* crtc, PlaneType type, PixelFormat fo
 
 Plane* ResourceManager::reserve_generic_plane(Crtc* crtc, PixelFormat format)
 {
+       if (!crtc)
+               return nullptr;
+
        for (Plane* plane : crtc->get_possible_planes()) {
                if (plane->plane_type() == PlaneType::Cursor)
                        continue;