111 struct rxtx {  struct
119 	struct rxtx rxtx;       /* loop back buffer */  argument
308 		if (mdev_state->s[index].rxtx.count <  in handle_bar_write()
310 			mdev_state->s[index].rxtx.fifo[  in handle_bar_write()
311 					mdev_state->s[index].rxtx.head] = data;  in handle_bar_write()
312 			mdev_state->s[index].rxtx.count++;  in handle_bar_write()
313 			CIRCULAR_BUF_INC_IDX(mdev_state->s[index].rxtx.head);  in handle_bar_write()
322 			   (mdev_state->s[index].rxtx.count ==  in handle_bar_write()
356 			    (mdev_state->s[index].rxtx.head ==  in handle_bar_write()
357 					mdev_state->s[index].rxtx.tail)) {  in handle_bar_write()
376 			mdev_state->s[index].rxtx.count = 0;  in handle_bar_write()
377 			mdev_state->s[index].rxtx.head = 0;  in handle_bar_write()
378 			mdev_state->s[index].rxtx.tail = 0;  in handle_bar_write()
473 		if (mdev_state->s[index].rxtx.head !=  in handle_bar_read()
474 				 mdev_state->s[index].rxtx.tail) {  in handle_bar_read()
475 			*buf = mdev_state->s[index].rxtx.fifo[  in handle_bar_read()
476 						mdev_state->s[index].rxtx.tail];  in handle_bar_read()
477 			mdev_state->s[index].rxtx.count--;  in handle_bar_read()
478 			CIRCULAR_BUF_INC_IDX(mdev_state->s[index].rxtx.tail);  in handle_bar_read()
481 		if (mdev_state->s[index].rxtx.head ==  in handle_bar_read()
482 				mdev_state->s[index].rxtx.tail) {  in handle_bar_read()
518 		    (mdev_state->s[index].rxtx.count >=  in handle_bar_read()
524 		    (mdev_state->s[index].rxtx.head ==  in handle_bar_read()
525 				mdev_state->s[index].rxtx.tail))  in handle_bar_read()
555 		if (mdev_state->s[index].rxtx.head !=  in handle_bar_read()
556 				 mdev_state->s[index].rxtx.tail)  in handle_bar_read()
564 		if (mdev_state->s[index].rxtx.head ==  in handle_bar_read()
565 				 mdev_state->s[index].rxtx.tail)  in handle_bar_read()
579 			if (mdev_state->s[index].rxtx.count <  in handle_bar_read()