disable uart0 uart7 uart9

hc

2023-11-22 983d7f83616922a6439b4352d1b3af488ee27f95

 kernel/include/linux/timer.h
..
..
@@ -176,7 +176,7 @@
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 extern int try_to_del_timer_sync(struct timer_list *timer);
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-#ifdef CONFIG_SMP
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+#if defined(CONFIG_SMP) || defined(CONFIG_PREEMPT_RT_FULL)
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   extern int del_timer_sync(struct timer_list *timer);
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 #else
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 # define del_timer_sync(t)		del_timer(t)