fb: add hooks to handle KDB enter/exit
[sfrench/cifs-2.6.git] / drivers / video / console / fbcon.c
index b0a3fa00706d2e25896fc862aa1bcc116010a6c7..3b3f5749af925c83d055fa41df0a1c6baed92e5a 100644 (file)
@@ -2342,6 +2342,30 @@ static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch)
        return 0;
 }
 
+static int fbcon_debug_enter(struct vc_data *vc)
+{
+       struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
+       struct fbcon_ops *ops = info->fbcon_par;
+
+       ops->save_graphics = ops->graphics;
+       ops->graphics = 0;
+       if (info->fbops->fb_debug_enter)
+               info->fbops->fb_debug_enter(info);
+       fbcon_set_palette(vc, color_table);
+       return 0;
+}
+
+static int fbcon_debug_leave(struct vc_data *vc)
+{
+       struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
+       struct fbcon_ops *ops = info->fbcon_par;
+
+       ops->graphics = ops->save_graphics;
+       if (info->fbops->fb_debug_leave)
+               info->fbops->fb_debug_leave(info);
+       return 0;
+}
+
 static int fbcon_get_font(struct vc_data *vc, struct console_font *font)
 {
        u8 *fontdata = vc->vc_font.data;
@@ -3276,6 +3300,8 @@ static const struct consw fb_con = {
        .con_screen_pos         = fbcon_screen_pos,
        .con_getxy              = fbcon_getxy,
        .con_resize             = fbcon_resize,
+       .con_debug_enter        = fbcon_debug_enter,
+       .con_debug_leave        = fbcon_debug_leave,
 };
 
 static struct notifier_block fbcon_event_notifier = {