1 files changed, 8 insertions, 4 deletions

diff --git a/drivers/i2c/busses/i2c-parport.c b/drivers/i2c/busses/i2c-parport.c
index b9f1c5c7b572..8c953707253f 100644
--- a/drivers/i2c/busses/i2c-parport.c
+++ b/drivers/i2c/busses/i2c-parport.c
@@ -1,7 +1,7 @@
 /* ------------------------------------------------------------------------ *
  * i2c-parport.c I2C bus over parallel port                                 *
  * ------------------------------------------------------------------------ *
-   Copyright (C) 2003-2004 Jean Delvare <khali@linux-fr.org>
+   Copyright (C) 2003-2007 Jean Delvare <khali@linux-fr.org>
    
    Based on older i2c-philips-par.c driver
    Copyright (C) 1995-2000 Simon G. Vogl
@@ -137,7 +137,7 @@ static struct i2c_algo_bit_data parport_algo_data = {
         .setscl         = parport_setscl,
         .getsda         = parport_getsda,
         .getscl         = parport_getscl,
-        .udelay         = 60,
+        .udelay         = 10, /* ~50 kbps */
         .timeout        = HZ,
 }; 
 
@@ -168,8 +168,11 @@ static void i2c_parport_attach (struct parport *port)
         strlcpy(adapter->adapter.name, "Parallel port adapter",
                 sizeof(adapter->adapter.name));
         adapter->algo_data = parport_algo_data;
-        if (!adapter_parm[type].getscl.val)
+        /* Slow down if we can't sense SCL */
+        if (!adapter_parm[type].getscl.val) {
                 adapter->algo_data.getscl = NULL;
+                adapter->algo_data.udelay = 50; /* ~10 kbps */
+        }
         adapter->algo_data.data = port;
         adapter->adapter.algo_data = &adapter->algo_data;
 
@@ -211,11 +214,12 @@ static void i2c_parport_detach (struct parport *port)
         for (prev = NULL, adapter = adapter_list; adapter;
              prev = adapter, adapter = adapter->next) {
                 if (adapter->pdev->port == port) {
+                        i2c_del_adapter(&adapter->adapter);
+
                         /* Un-init if needed (power off...) */
                         if (adapter_parm[type].init.val)
                                 line_set(port, 0, &adapter_parm[type].init);
                                 
-                        i2c_del_adapter(&adapter->adapter);
                         parport_unregister_device(adapter->pdev);
                         if (prev)
                                 prev->next = adapter->next;