add gpio led uart

hc

2024-05-10 748e4f3d702def1a4bff191e0cf93b6a05340f01

 kernel/sound/usb/line6/driver.c
..
..
@@ -304,7 +304,8 @@
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 		for (;;) {
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 			done =
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 				line6_midibuf_read(mb, line6->buffer_message,
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-						LINE6_MIDI_MESSAGE_MAXLEN);
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+						   LINE6_MIDI_MESSAGE_MAXLEN,
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+						   LINE6_MIDIBUF_READ_RX);
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 			if (done <= 0)
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 				break;