staging: olpc_dcon: remove unnecessary work pending test

Remove unnecessary work pending test before calling schedule_work().
It has been tested in queue_work_on() already. No functional changed.

Signed-off-by: Xie XiuQi <xiexiuqi@huawei.com>
Cc: Jens Frederich <jfrederich@gmail.com>
Cc: Daniel Drake <dsd@laptop.org>
Cc: Jon Nettleton <jon.nettleton@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/olpc_dcon/olpc_dcon.c

@@ -383,7 +383,7 @@ static void dcon_set_source(struct dcon_priv *dcon, int arg)
 
 	dcon->pending_src = arg;
 
-	if ((dcon->curr_src != arg) && !work_pending(&dcon->switch_source))
+	if (dcon->curr_src != arg)
 		schedule_work(&dcon->switch_source);
 }