plugins: propagate cached probing result to supports task

We need to ensure that the supports task always has the results of the probing,
no matter if the probing was just launched by the plugin grabbing the port, or
by a previous plugin. We do this during supports_port(), by propagating to the
supports task any possible previously cached probing results.

1 files changed, 6 insertions, 3 deletions

diff --git a/plugins/mm-plugin-linktop.c b/plugins/mm-plugin-linktop.c
index 8d2e199a..0421dfd6 100644
--- a/plugins/mm-plugin-linktop.c
+++ b/plugins/mm-plugin-linktop.c
@@ -57,7 +57,6 @@ supports_port (MMPluginBase *base,
                MMPluginBaseSupportsTask *task)
 {
     GUdevDevice *port;
-    guint32 cached = 0, level;
     const char *subsys, *name;
     guint16 vendor = 0;
 
@@ -75,8 +74,12 @@ supports_port (MMPluginBase *base,
     if (vendor != 0x230d)
         return MM_PLUGIN_SUPPORTS_PORT_UNSUPPORTED;
 
-    if (mm_plugin_base_get_cached_port_capabilities (base, port, &cached)) {
-        level = get_level_for_capabilities (cached);
+    /* Check if a previous probing was already launched in this port */
+    if (mm_plugin_base_supports_task_propagate_cached (task)) {
+        guint32 level;
+
+        /* A previous probing was already done, use its results */
+        level = get_level_for_capabilities (mm_plugin_base_supports_task_get_probed_capabilities (task));
         if (level) {
             mm_plugin_base_supports_task_complete (task, level);
             return MM_PLUGIN_SUPPORTS_PORT_IN_PROGRESS;