110 struct rxtx {  struct
118 	struct rxtx rxtx;       /* loop back buffer */  argument
350 		if (mdev_state->s[index].rxtx.count <  in handle_bar_write()
352 			mdev_state->s[index].rxtx.fifo[  in handle_bar_write()
353 					mdev_state->s[index].rxtx.head] = data;  in handle_bar_write()
354 			mdev_state->s[index].rxtx.count++;  in handle_bar_write()
355 			CIRCULAR_BUF_INC_IDX(mdev_state->s[index].rxtx.head);  in handle_bar_write()
364 			   (mdev_state->s[index].rxtx.count ==  in handle_bar_write()
398 			    (mdev_state->s[index].rxtx.head ==  in handle_bar_write()
399 					mdev_state->s[index].rxtx.tail)) {  in handle_bar_write()
418 			mdev_state->s[index].rxtx.count = 0;  in handle_bar_write()
419 			mdev_state->s[index].rxtx.head = 0;  in handle_bar_write()
420 			mdev_state->s[index].rxtx.tail = 0;  in handle_bar_write()
515 		if (mdev_state->s[index].rxtx.head !=  in handle_bar_read()
516 				 mdev_state->s[index].rxtx.tail) {  in handle_bar_read()
517 			*buf = mdev_state->s[index].rxtx.fifo[  in handle_bar_read()
518 						mdev_state->s[index].rxtx.tail];  in handle_bar_read()
519 			mdev_state->s[index].rxtx.count--;  in handle_bar_read()
520 			CIRCULAR_BUF_INC_IDX(mdev_state->s[index].rxtx.tail);  in handle_bar_read()
523 		if (mdev_state->s[index].rxtx.head ==  in handle_bar_read()
524 				mdev_state->s[index].rxtx.tail) {  in handle_bar_read()
560 		    (mdev_state->s[index].rxtx.count >=  in handle_bar_read()
566 		    (mdev_state->s[index].rxtx.head ==  in handle_bar_read()
567 				mdev_state->s[index].rxtx.tail))  in handle_bar_read()
597 		if (mdev_state->s[index].rxtx.head !=  in handle_bar_read()
598 				 mdev_state->s[index].rxtx.tail)  in handle_bar_read()
606 		if (mdev_state->s[index].rxtx.head ==  in handle_bar_read()
607 				 mdev_state->s[index].rxtx.tail)  in handle_bar_read()
621 			if (mdev_state->s[index].rxtx.count <  in handle_bar_read()