Index: compat-wireless-2013-02-22/drivers/net/wireless/rt2x00/rt2800lib.c
===================================================================
--- compat-wireless-2013-02-22.orig/drivers/net/wireless/rt2x00/rt2800lib.c	2013-04-02 10:56:56.245205151 +0200
+++ compat-wireless-2013-02-22/drivers/net/wireless/rt2x00/rt2800lib.c	2013-04-02 11:24:06.057243987 +0200
@@ -38,6 +38,7 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/slab.h>
+#include <linux/clk.h>
 
 #include "rt2x00.h"
 #include "rt2800lib.h"
@@ -5505,13 +5506,14 @@
 
 int rt2800_probe_clk(struct rt2x00_dev *rt2x00dev)
 {
-	struct rt2x00_platform_data *pdata = rt2x00dev->dev->platform_data;
 	struct hw_mode_spec *spec = &rt2x00dev->spec;
+	struct clk *clk = clk_get(rt2x00dev->dev, NULL);
 
-	if (!pdata)
-		return -EINVAL;
+	if (IS_ERR(clk))
+		return PTR_ERR(clk);
 
-	spec->clk_is_20mhz = pdata->clk_is_20mhz;
+	if (clk_get_rate(clk) == 20000000)
+		spec->clk_is_20mhz = 1;
 
 	return 0;
 }