add gpio led uart

hc

2024-05-10 748e4f3d702def1a4bff191e0cf93b6a05340f01

 kernel/arch/um/include/asm/irqflags.h
..
..
@@ -32,7 +32,6 @@
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 }
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 #define ARCH_IRQ_DISABLED	0
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-#define ARCh_IRQ_ENABLED	(SIGIO|SIGVTALRM)
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 #include <asm-generic/irqflags.h>
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