1 files changed, 9 insertions, 8 deletions

diff --git a/drivers/tty/serial/mxs-auart.c b/drivers/tty/serial/mxs-auart.c
index 4f5f161896a1..3de0fb2712f5 100644
--- a/drivers/tty/serial/mxs-auart.c
+++ b/drivers/tty/serial/mxs-auart.c
@@ -678,11 +678,18 @@ static void mxs_auart_settermios(struct uart_port *u,
 
 static irqreturn_t mxs_auart_irq_handle(int irq, void *context)
 {
-        u32 istatus, istat;
+        u32 istat;
         struct mxs_auart_port *s = context;
         u32 stat = readl(s->port.membase + AUART_STAT);
 
-        istatus = istat = readl(s->port.membase + AUART_INTR);
+        istat = readl(s->port.membase + AUART_INTR);
+
+        /* ack irq */
+        writel(istat & (AUART_INTR_RTIS
+                | AUART_INTR_TXIS
+                | AUART_INTR_RXIS
+                | AUART_INTR_CTSMIS),
+                        s->port.membase + AUART_INTR_CLR);
 
         if (istat & AUART_INTR_CTSMIS) {
                 uart_handle_cts_change(&s->port, stat & AUART_STAT_CTS);
@@ -702,12 +709,6 @@ static irqreturn_t mxs_auart_irq_handle(int irq, void *context)
                 istat &= ~AUART_INTR_TXIS;
         }
 
-        writel(istatus & (AUART_INTR_RTIS
-                | AUART_INTR_TXIS
-                | AUART_INTR_RXIS
-                | AUART_INTR_CTSMIS),
-                        s->port.membase + AUART_INTR_CLR);
-
         return IRQ_HANDLED;
 }