1 files changed, 22 insertions, 5 deletions

diff --git a/drivers/serial/imx.c b/drivers/serial/imx.c
index 6a29f9330a73..3f90f1bbbbcd 100644
--- a/drivers/serial/imx.c
+++ b/drivers/serial/imx.c
@@ -127,8 +127,13 @@
 #define  UCR3_RXDSEN     (1<<6)  /* Receive status interrupt enable */
 #define  UCR3_AIRINTEN   (1<<5)  /* Async IR wake interrupt enable */
 #define  UCR3_AWAKEN     (1<<4)  /* Async wake interrupt enable */
-#define  UCR3_REF25      (1<<3)  /* Ref freq 25 MHz */
-#define  UCR3_REF30      (1<<2)  /* Ref Freq 30 MHz */
+#ifdef CONFIG_ARCH_IMX
+#define  UCR3_REF25      (1<<3)  /* Ref freq 25 MHz, only on mx1 */
+#define  UCR3_REF30      (1<<2)  /* Ref Freq 30 MHz, only on mx1 */
+#endif
+#if defined CONFIG_ARCH_MX2 || defined CONFIG_ARCH_MX3
+#define  UCR3_RXDMUXSEL  (1<<2)  /* RXD Muxed Input Select, on mx2/mx3 */
+#endif
 #define  UCR3_INVT       (1<<1)  /* Inverted Infrared transmission */
 #define  UCR3_BPEN       (1<<0)  /* Preset registers enable */
 #define  UCR4_CTSTL_32   (32<<10) /* CTS trigger level (32 chars) */
@@ -445,7 +450,7 @@ static irqreturn_t imx_int(int irq, void *dev_id)
                         readl(sport->port.membase + UCR1) & UCR1_TXMPTYEN)
                 imx_txint(irq, dev_id);
 
-        if (sts & USR1_RTSS)
+        if (sts & USR1_RTSD)
                 imx_rtsint(irq, dev_id);
 
         return IRQ_HANDLED;
@@ -598,6 +603,12 @@ static int imx_startup(struct uart_port *port)
         temp |= (UCR2_RXEN | UCR2_TXEN);
         writel(temp, sport->port.membase + UCR2);
 
+#if defined CONFIG_ARCH_MX2 || defined CONFIG_ARCH_MX3
+        temp = readl(sport->port.membase + UCR3);
+        temp |= UCR3_RXDMUXSEL;
+        writel(temp, sport->port.membase + UCR3);
+#endif
+
         /*
          * Enable modem status interrupts
          */
@@ -1133,13 +1144,19 @@ static int serial_imx_probe(struct platform_device *pdev)
         if(pdata && (pdata->flags & IMXUART_HAVE_RTSCTS))
                 sport->have_rtscts = 1;
 
-        if (pdata->init)
-                pdata->init(pdev);
+        if (pdata->init) {
+                ret = pdata->init(pdev);
+                if (ret)
+                        goto clkput;
+        }
 
         uart_add_one_port(&imx_reg, &sport->port);
         platform_set_drvdata(pdev, &sport->port);
 
         return 0;
+clkput:
+        clk_put(sport->clk);
+        clk_disable(sport->clk);
 unmap:
         iounmap(sport->port.membase);
 free: