Backport r29081: Fix player becoming unresponsive on Stop / Pause in some cases.v3.7

Fix for FS#11865: In tagtree_buffer_event, do not wait for database to
come online as that may never happen.  Rather, wait until it either
has come online or has decided that this will never happen.  Added a
new function to tagcache.c to export this information.

Flyspray: FS#11865
Author: Michael Hohmuth



git-svn-id: svn://svn.rockbox.org/rockbox/branches/v3_7@29134 a1c6a512-1295-4272-9138-f99709370657

3 files changed, 6 insertions, 1 deletions

diff --git a/apps/tagcache.c b/apps/tagcache.c
index 39ed99fcce..efc779d2e3 100644
--- a/apps/tagcache.c
+++ b/apps/tagcache.c
@@ -4645,6 +4645,10 @@ bool tagcache_is_initialized(void)
 {
     return tc_stat.initialized;
 }
+bool tagcache_is_fully_initialized(void)
+{
+    return tc_stat.readyvalid;
+}
 bool tagcache_is_usable(void)
 {
     return tc_stat.initialized && tc_stat.ready;
diff --git a/apps/tagcache.h b/apps/tagcache.h
index b52da76a0f..19608063c8 100644
--- a/apps/tagcache.h
+++ b/apps/tagcache.h
@@ -246,6 +246,7 @@ void tagcache_unload_ramcache(void);
 #endif
 void tagcache_init(void) INIT_ATTR;
 bool tagcache_is_initialized(void);
+bool tagcache_is_fully_initialized(void);
 bool tagcache_is_usable(void);
 void tagcache_start_scan(void);
 void tagcache_stop_scan(void);
diff --git a/apps/tagtree.c b/apps/tagtree.c
index 75caab01d4..0e0536c2fd 100644
--- a/apps/tagtree.c
+++ b/apps/tagtree.c
@@ -652,7 +652,7 @@ static void tagtree_buffer_event(void *data)
 
     logf("be:%s", id3->path);
     
-    while (! tagcache_is_usable())
+    while (! tagcache_is_fully_initialized())
         yield();
 
     if (!tagcache_find_index(&tcs, id3->path))