diff --git a/drivers/serial/bfin_5xx.c b/drivers/serial/bfin_5xx.c
index 8a2f6a1..869c99a 100644
--- a/drivers/serial/bfin_5xx.c
+++ b/drivers/serial/bfin_5xx.c
@@ -65,9 +65,6 @@
 {
 	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;
 	struct circ_buf *xmit = &uart->port.info->xmit;
-#if !defined(CONFIG_BF54x) && !defined(CONFIG_SERIAL_BFIN_DMA)
-	unsigned short ier;
-#endif
 
 	while (!(UART_GET_LSR(uart) & TEMT))
 		cpu_relax();
@@ -82,12 +79,8 @@
 #ifdef CONFIG_BF54x
 	/* Clear TFI bit */
 	UART_PUT_LSR(uart, TFI);
-	UART_CLEAR_IER(uart, ETBEI);
-#else
-	ier = UART_GET_IER(uart);
-	ier &= ~ETBEI;
-	UART_PUT_IER(uart, ier);
 #endif
+	UART_CLEAR_IER(uart, ETBEI);
 #endif
 }
 
@@ -102,14 +95,7 @@
 	if (uart->tx_done)
 		bfin_serial_dma_tx_chars(uart);
 #else
-#ifdef CONFIG_BF54x
 	UART_SET_IER(uart, ETBEI);
-#else
-	unsigned short ier;
-	ier = UART_GET_IER(uart);
-	ier |= ETBEI;
-	UART_PUT_IER(uart, ier);
-#endif
 	bfin_serial_tx_chars(uart);
 #endif
 }
@@ -120,21 +106,10 @@
 static void bfin_serial_stop_rx(struct uart_port *port)
 {
 	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;
-#ifdef	CONFIG_KGDB_UART
-	if (uart->port.line != CONFIG_KGDB_UART_PORT) {
+#ifdef CONFIG_KGDB_UART
+	if (uart->port.line != CONFIG_KGDB_UART_PORT)
 #endif
-#ifdef CONFIG_BF54x
 	UART_CLEAR_IER(uart, ERBFI);
-#else
-	unsigned short ier;
-
-	ier = UART_GET_IER(uart);
-	ier &= ~ERBFI;
-	UART_PUT_IER(uart, ier);
-#endif
-#ifdef	CONFIG_KGDB_UART
-	}
-#endif
 }
 
 /*
@@ -208,9 +183,6 @@
 	struct tty_struct *tty = uart->port.info->tty;
 	unsigned int status, ch, flg;
 	static struct timeval anomaly_start = { .tv_sec = 0 };
-#ifdef CONFIG_KGDB_UART
-	struct pt_regs *regs = get_irq_regs();
-#endif
 
 	status = UART_GET_LSR(uart);
 	UART_CLEAR_LSR(uart);
@@ -220,6 +192,7 @@
 
 #ifdef CONFIG_KGDB_UART
 	if (uart->port.line == CONFIG_KGDB_UART_PORT) {
+		struct pt_regs *regs = get_irq_regs();
 		if (uart->port.cons->index == CONFIG_KGDB_UART_PORT && ch == 0x1) { /* Ctrl + A */
 			kgdb_breakkey_pressed(regs);
 			return;
@@ -391,7 +364,6 @@
 static void bfin_serial_dma_tx_chars(struct bfin_serial_port *uart)
 {
 	struct circ_buf *xmit = &uart->port.info->xmit;
-	unsigned short ier;
 
 	uart->tx_done = 0;
 
@@ -429,13 +401,7 @@
 	set_dma_x_modify(uart->tx_dma_channel, 1);
 	enable_dma(uart->tx_dma_channel);
 
-#ifdef CONFIG_BF54x
 	UART_SET_IER(uart, ETBEI);
-#else
-	ier = UART_GET_IER(uart);
-	ier |= ETBEI;
-	UART_PUT_IER(uart, ier);
-#endif
 }
 
 static void bfin_serial_dma_rx_chars(struct bfin_serial_port *uart)
@@ -513,19 +479,12 @@
 {
 	struct bfin_serial_port *uart = dev_id;
 	struct circ_buf *xmit = &uart->port.info->xmit;
-	unsigned short ier;
 
 	spin_lock(&uart->port.lock);
 	if (!(get_dma_curr_irqstat(uart->tx_dma_channel)&DMA_RUN)) {
 		disable_dma(uart->tx_dma_channel);
 		clear_dma_irqstat(uart->tx_dma_channel);
-#ifdef CONFIG_BF54x
 		UART_CLEAR_IER(uart, ETBEI);
-#else
-		ier = UART_GET_IER(uart);
-		ier &= ~ETBEI;
-		UART_PUT_IER(uart, ier);
-#endif
 		xmit->tail = (xmit->tail + uart->tx_count) & (UART_XMIT_SIZE - 1);
 		uart->port.icount.tx += uart->tx_count;
 
@@ -701,7 +660,6 @@
 # endif
 	}
 
-
 	if (request_irq
 	    (uart->port.irq+1, bfin_serial_tx_int, IRQF_DISABLED,
 	     "BFIN_UART_TX", uart)) {
@@ -710,11 +668,7 @@
 		return -EBUSY;
 	}
 #endif
-#ifdef CONFIG_BF54x
 	UART_SET_IER(uart, ERBFI);
-#else
-	UART_PUT_IER(uart, UART_GET_IER(uart) | ERBFI);
-#endif
 	return 0;
 }
 
@@ -1290,11 +1244,7 @@
 		request_irq(uart->port.irq, bfin_serial_rx_int,
 			IRQF_DISABLED, "BFIN_UART_RX", uart);
 		pr_info("Request irq for kgdb uart port\n");
-#ifdef CONFIG_BF54x
 		UART_SET_IER(uart, ERBFI);
-#else
-		UART_PUT_IER(uart, UART_GET_IER(uart) | ERBFI);
-#endif
 		SSYNC();
 		t.c_cflag = CS8|B57600;
 		t.c_iflag = 0;