add gpio led uart

hc

2024-05-10 748e4f3d702def1a4bff191e0cf93b6a05340f01

 kernel/arch/powerpc/include/asm/stackprotector.h
..
..
@@ -24,11 +24,7 @@
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 	unsigned long canary;
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 	/* Try to get a semi random initial value. */
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-#ifdef CONFIG_PREEMPT_RT
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-	canary = (unsigned long)&canary;
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-#else
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 	canary = get_random_canary();
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-#endif
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 	canary ^= mftb();
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 	canary ^= LINUX_VERSION_CODE;
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 	canary &= CANARY_MASK;