1 files changed, 20 insertions, 11 deletions

diff --git a/drivers/serial/s3c2410.c b/drivers/serial/s3c2410.c
index e284af8071de..b87c0b55aa22 100644
--- a/drivers/serial/s3c2410.c
+++ b/drivers/serial/s3c2410.c
@@ -685,11 +685,6 @@ static unsigned int s3c24xx_serial_getclk(struct uart_port *port,
                 int calc_deviation;
 
                 for (sptr = res; sptr < resptr; sptr++) {
-                        printk(KERN_DEBUG
-                               "found clk %p (%s) quot %d, calc %d\n",
-                               sptr->clksrc, sptr->clksrc->name,
-                               sptr->quot, sptr->calc);
-
                         calc_deviation = baud - sptr->calc;
                         if (calc_deviation < 0)
                                 calc_deviation = -calc_deviation;
@@ -699,13 +694,8 @@ static unsigned int s3c24xx_serial_getclk(struct uart_port *port,
                                 deviation = calc_deviation;
                         }
                 }
-
-                printk(KERN_DEBUG "best %p (deviation %d)\n", best, deviation);
         }
 
-        printk(KERN_DEBUG "selected clock %p (%s) quot %d, calc %d\n",
-               best->clksrc, best->clksrc->name, best->quot, best->calc);
-
         /* store results to pass back */
 
         *clksrc = best->clksrc;
@@ -1058,6 +1048,18 @@ static int s3c24xx_serial_init_port(struct s3c24xx_uart_port *ourport,
         return 0;
 }
 
+static ssize_t s3c24xx_serial_show_clksrc(struct device *dev,
+                                          struct device_attribute *attr,
+                                          char *buf)
+{
+        struct uart_port *port = s3c24xx_dev_to_port(dev);
+        struct s3c24xx_uart_port *ourport = to_ourport(port);
+
+        return snprintf(buf, PAGE_SIZE, "* %s\n", ourport->clksrc->name);
+}
+
+static DEVICE_ATTR(clock_source, S_IRUGO, s3c24xx_serial_show_clksrc, NULL);
+
 /* Device driver serial port probe */
 
 static int probe_index = 0;
@@ -1083,6 +1085,11 @@ static int s3c24xx_serial_probe(struct platform_device *dev,
         uart_add_one_port(&s3c24xx_uart_drv, &ourport->port);
         platform_set_drvdata(dev, &ourport->port);
 
+        ret = device_create_file(&dev->dev, &dev_attr_clock_source);
+        if (ret < 0) {
+                printk(KERN_ERR "%s: failed to add clksrc attr.\n", __func__);
+        }
+
         return 0;
 
  probe_err:
@@ -1093,8 +1100,10 @@ static int s3c24xx_serial_remove(struct platform_device *dev)
 {
         struct uart_port *port = s3c24xx_dev_to_port(&dev->dev);
 
-        if (port)
+        if (port) {
+                device_remove_file(&dev->dev, &dev_attr_clock_source);
                 uart_remove_one_port(&s3c24xx_uart_drv, port);
+        }
 
         return 0;
 }