pch_uart: change type to u8

Target uart register access size is 8bit.
However, 32bit is used at 2 points.

This patch modifies type "unsigned int" to "unsigned char".

Signed-off-by: Tomoya MORINAGA <tomoya.rohm@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 4 insertions, 8 deletions

diff --git a/drivers/tty/serial/pch_uart.c b/drivers/tty/serial/pch_uart.c
index 110595ed33f5..32ac7ea259db 100644
--- a/drivers/tty/serial/pch_uart.c
+++ b/drivers/tty/serial/pch_uart.c
@@ -552,14 +552,10 @@ static int pch_uart_hal_read(struct eg20t_port *priv, unsigned char *buf,
         return i;
 }
 
-static unsigned int pch_uart_hal_get_iid(struct eg20t_port *priv)
+static unsigned char pch_uart_hal_get_iid(struct eg20t_port *priv)
 {
-        unsigned int iir;
-        int ret;
-
-        iir = ioread8(priv->membase + UART_IIR);
-        ret = (iir & (PCH_UART_IIR_IID | PCH_UART_IIR_TOI | PCH_UART_IIR_IP));
-        return ret;
+        return ioread8(priv->membase + UART_IIR) &\
+                      (PCH_UART_IIR_IID | PCH_UART_IIR_TOI | PCH_UART_IIR_IP);
 }
 
 static u8 pch_uart_hal_get_line_status(struct eg20t_port *priv)
@@ -1045,7 +1041,7 @@ static irqreturn_t pch_uart_interrupt(int irq, void *dev_id)
         unsigned int handled;
         u8 lsr;
         int ret = 0;
-        unsigned int iid;
+        unsigned char iid;
         unsigned long flags;
 
         spin_lock_irqsave(&priv->port.lock, flags);