修改led为gpio

hc

2024-10-12 a5969cabbb4660eab42b6ef0412cbbd1200cf14d

 kernel/arch/hexagon/include/asm/futex.h
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@@ -21,7 +21,7 @@
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 	"3:\n" \
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 	".section .fixup,\"ax\"\n" \
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 	"4: %1 = #%5;\n" \
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-	"   jump 3b\n" \
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+	"   jump ##3b\n" \
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 	".previous\n" \
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 	".section __ex_table,\"a\"\n" \
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 	".long 1b,4b,2b,4b\n" \
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@@ -36,7 +36,8 @@
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 {
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 	int oldval = 0, ret;
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-	pagefault_disable();
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+	if (!access_ok(uaddr, sizeof(u32)))
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+		return -EFAULT;
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 	switch (op) {
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 	case FUTEX_OP_SET:
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@@ -62,8 +63,6 @@
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 		ret = -ENOSYS;
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 	}
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-	pagefault_enable();
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-
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 	if (!ret)
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 		*oval = oldval;
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@@ -77,7 +76,7 @@
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 	int prev;
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 	int ret;
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-	if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32)))
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+	if (!access_ok(uaddr, sizeof(u32)))
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 		return -EFAULT;
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 	__asm__ __volatile__ (
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@@ -91,7 +90,7 @@
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 	"3:\n"
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 	".section .fixup,\"ax\"\n"
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 	"4: %0 = #%6\n"
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-	"   jump 3b\n"
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+	"   jump ##3b\n"
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 	".previous\n"
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 	".section __ex_table,\"a\"\n"
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 	".long 1b,4b,2b,4b\n"