rk3568 rt init

hc

2023-11-06 e3e12f52b214121840b44c91de5b3e5af5d3eb84

 kernel/drivers/tty/serial/8250/8250_core.c
..
..
@@ -54,7 +54,16 @@
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 static unsigned int skip_txen_test; /* force skip of txen test at init time */
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-#define PASS_LIMIT	512
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+/*
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+ * On -rt we can have a more delays, and legitimately
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+ * so - so don't drop work spuriously and spam the
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+ * syslog:
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+ */
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+#ifdef CONFIG_PREEMPT_RT_FULL
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+# define PASS_LIMIT	1000000
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+#else
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+# define PASS_LIMIT	512
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+#endif
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 #include <asm/serial.h>
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 /*