Fix a bug whereby ACTION_TREE_WPS (GO_TO_PREVIOUS_MUSIC) brings us to the

radio, despite playback having been started since we last visited the radio.

To reproduce:
-go to the radio,
-stop and exit it,
-go to the browser, and do a playlist insert,
    or start a playlist from the playlist catalog,
    anything that starts playback without going to the WPS.
-Press ACTION_TREE_WPS.
Find yourself back into the radio.


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@15085 a1c6a512-1295-4272-9138-f99709370657

apps/playlist.c

@@ -99,6 +99,7 @@
 #include "talk.h"
 #include "splash.h"
 #include "rbunicode.h"
+#include "root_menu.h"
 
 #define PLAYLIST_CONTROL_FILE ROCKBOX_DIR "/.playlist_control"
 #define PLAYLIST_CONTROL_FILE_VERSION 2
@@ -2387,6 +2388,11 @@ int playlist_start(int start_index, int offset)
 {
     struct playlist_info* playlist = &current_playlist;
 
+    /* Cancel FM radio selection as previous music. For cases where we start
+       playback without going to the WPS, such as playlist insert.. or
+       playlist catalog. */
+    previous_music_is_wps();
+
     playlist->index = start_index;
 
 #if CONFIG_CODEC != SWCODEC

apps/root_menu.c

@@ -487,10 +487,17 @@ static int load_context_screen(int selection)
     else
         return GO_TO_PREVIOUS;
 }
+
+static int previous_music = GO_TO_WPS;
+
+void previous_music_is_wps(void)
+{
+    previous_music = GO_TO_WPS;
+}
+
 void root_menu(void)
 {
     int previous_browser = GO_TO_FILEBROWSER;
-    int previous_music = GO_TO_WPS;
     int next_screen = GO_TO_ROOT;
     int selected = 0;
 

apps/root_menu.h

@@ -51,4 +51,6 @@ enum {
 
 extern const struct menu_item_ex root_menu_;
 
+extern void previous_music_is_wps(void);
+
 #endif /* __ROOT_MENU_H__ */