---

yaml --- r: 355801 b: refs/heads/master c: c64c65d h: refs/heads/master i: 355799: 03648e1 v: v3
git-mirror · Feb 12, 2013 · b19fcf8 · b19fcf8
1 parent c127194
commit b19fcf8
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Showing 2 changed files with 16 additions and 4 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 22ca335f6db9cf614696bbcb83eb0b80db7b4110
+refs/heads/master: c64c65d494ade53fa41fb0b980381807743b5095
diff --git a/trunk/drivers/clk/tegra/clk-super.c b/trunk/drivers/clk/tegra/clk-super.c
@@ -73,7 +73,12 @@ static int clk_super_set_parent(struct clk_hw *hw, u8 index)
 {
 	struct tegra_clk_super_mux *mux = to_clk_super_mux(hw);
 	u32 val, state;
+	int err = 0;
 	u8 parent_index, shift;
+	unsigned long flags = 0;
+
+	if (mux->lock)
+		spin_lock_irqsave(mux->lock, flags);
 
 	val = readl_relaxed(mux->reg);
 	state = val & SUPER_STATE_MASK;
@@ -92,8 +97,10 @@ static int clk_super_set_parent(struct clk_hw *hw, u8 index)
 					       (index == mux->pllx_index))) {
 		parent_index = clk_super_get_parent(hw);
 		if ((parent_index == mux->div2_index) ||
-		    (parent_index == mux->pllx_index))
-			return -EINVAL;
+		    (parent_index == mux->pllx_index)) {
+			err = -EINVAL;
+			goto out;
+		}
 
 		val ^= SUPER_LP_DIV2_BYPASS;
 		writel_relaxed(val, mux->reg);
@@ -107,7 +114,12 @@ static int clk_super_set_parent(struct clk_hw *hw, u8 index)
 
 	writel_relaxed(val, mux->reg);
 	udelay(2);
-	return 0;
+
+out:
+	if (mux->lock)
+		spin_unlock_irqrestore(mux->lock, flags);
+
+	return err;
 }
 
 const struct clk_ops tegra_clk_super_ops = {