Fix USART driver.
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@@ -341,7 +341,7 @@ static int
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rb_empty_check (void *arg)
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rb_empty_check (void *arg)
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{
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{
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struct rb *rb = arg;
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struct rb *rb = arg;
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return rb->empty != 0;
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return rb->empty == 0;
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}
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}
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static void
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static void
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