avr32: fix deadlock when reading clock list in debugfs

index 442f08c..86925fd 100644
@@ -35,22 +35,30 @@ void at32_clk_register(struct clk *clk)
 	spin_unlock(&clk_list_lock);
 }
 
-struct clk *clk_get(struct device *dev, const char *id)
+static struct clk *__clk_get(struct device *dev, const char *id)
 {
 	struct clk *clk;
 
-	spin_lock(&clk_list_lock);
-
 	list_for_each_entry(clk, &at32_clock_list, list) {
 		if (clk->dev == dev && strcmp(id, clk->name) == 0) {
-			spin_unlock(&clk_list_lock);
 			return clk;
 		}
 	}
 
-	spin_unlock(&clk_list_lock);
 	return ERR_PTR(-ENOENT);
 }
+
+struct clk *clk_get(struct device *dev, const char *id)
+{
+	struct clk *clk;
+
+	spin_lock(&clk_list_lock);
+	clk = __clk_get(dev, id);
+	spin_unlock(&clk_list_lock);
+
+	return clk;
+}
+
 EXPORT_SYMBOL(clk_get);
 
 void clk_put(struct clk *clk)

@@ -257,15 +265,15 @@ static int clk_show(struct seq_file *s, void *unused)
 	spin_lock(&clk_list_lock);
 
 	/* show clock tree as derived from the three oscillators */
-	clk = clk_get(NULL, "osc32k");
+	clk = __clk_get(NULL, "osc32k");
 	dump_clock(clk, &r);
 	clk_put(clk);
 
-	clk = clk_get(NULL, "osc0");
+	clk = __clk_get(NULL, "osc0");
 	dump_clock(clk, &r);
 	clk_put(clk);
 
-	clk = clk_get(NULL, "osc1");
+	clk = __clk_get(NULL, "osc1");
 	dump_clock(clk, &r);
 	clk_put(clk);