Linux-libre 4.8.2-gnupck-4.8.2-gnu

1 files changed, 79 insertions, 10 deletions

diff --git a/drivers/clk/hisilicon/clk.c b/drivers/clk/hisilicon/clk.c
index 9b15adbfc..9ba2d91f4 100644
--- a/drivers/clk/hisilicon/clk.c
+++ b/drivers/clk/hisilicon/clk.c
@@ -37,6 +37,35 @@
 
 static DEFINE_SPINLOCK(hisi_clk_lock);
 
+struct hisi_clock_data *hisi_clk_alloc(struct platform_device *pdev,
+						int nr_clks)
+{
+	struct hisi_clock_data *clk_data;
+	struct resource *res;
+	struct clk **clk_table;
+
+	clk_data = devm_kmalloc(&pdev->dev, sizeof(*clk_data), GFP_KERNEL);
+	if (!clk_data)
+		return NULL;
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	clk_data->base = devm_ioremap(&pdev->dev,
+				res->start, resource_size(res));
+	if (!clk_data->base)
+		return NULL;
+
+	clk_table = devm_kmalloc(&pdev->dev, sizeof(struct clk *) * nr_clks,
+				GFP_KERNEL);
+	if (!clk_table)
+		return NULL;
+
+	clk_data->clk_data.clks = clk_table;
+	clk_data->clk_data.clk_num = nr_clks;
+
+	return clk_data;
+}
+EXPORT_SYMBOL_GPL(hisi_clk_alloc);
+
 struct hisi_clock_data *hisi_clk_init(struct device_node *np,
 					     int nr_clks)
 {
@@ -73,7 +102,7 @@ err:
 }
 EXPORT_SYMBOL_GPL(hisi_clk_init);
 
-void hisi_clk_register_fixed_rate(const struct hisi_fixed_rate_clock *clks,
+int hisi_clk_register_fixed_rate(const struct hisi_fixed_rate_clock *clks,
 					 int nums, struct hisi_clock_data *data)
 {
 	struct clk *clk;
@@ -87,14 +116,22 @@ void hisi_clk_register_fixed_rate(const struct hisi_fixed_rate_clock *clks,
 		if (IS_ERR(clk)) {
 			pr_err("%s: failed to register clock %s\n",
 			       __func__, clks[i].name);
-			continue;
+			goto err;
 		}
 		data->clk_data.clks[clks[i].id] = clk;
 	}
+
+	return 0;
+
+err:
+	while (i--)
+		clk_unregister_fixed_rate(data->clk_data.clks[clks[i].id]);
+
+	return PTR_ERR(clk);
 }
 EXPORT_SYMBOL_GPL(hisi_clk_register_fixed_rate);
 
-void hisi_clk_register_fixed_factor(const struct hisi_fixed_factor_clock *clks,
+int hisi_clk_register_fixed_factor(const struct hisi_fixed_factor_clock *clks,
 					   int nums,
 					   struct hisi_clock_data *data)
 {
@@ -109,14 +146,22 @@ void hisi_clk_register_fixed_factor(const struct hisi_fixed_factor_clock *clks,
 		if (IS_ERR(clk)) {
 			pr_err("%s: failed to register clock %s\n",
 			       __func__, clks[i].name);
-			continue;
+			goto err;
 		}
 		data->clk_data.clks[clks[i].id] = clk;
 	}
+
+	return 0;
+
+err:
+	while (i--)
+		clk_unregister_fixed_factor(data->clk_data.clks[clks[i].id]);
+
+	return PTR_ERR(clk);
 }
 EXPORT_SYMBOL_GPL(hisi_clk_register_fixed_factor);
 
-void hisi_clk_register_mux(const struct hisi_mux_clock *clks,
+int hisi_clk_register_mux(const struct hisi_mux_clock *clks,
 				  int nums, struct hisi_clock_data *data)
 {
 	struct clk *clk;
@@ -135,7 +180,7 @@ void hisi_clk_register_mux(const struct hisi_mux_clock *clks,
 		if (IS_ERR(clk)) {
 			pr_err("%s: failed to register clock %s\n",
 			       __func__, clks[i].name);
-			continue;
+			goto err;
 		}
 
 		if (clks[i].alias)
@@ -143,10 +188,18 @@ void hisi_clk_register_mux(const struct hisi_mux_clock *clks,
 
 		data->clk_data.clks[clks[i].id] = clk;
 	}
+
+	return 0;
+
+err:
+	while (i--)
+		clk_unregister_mux(data->clk_data.clks[clks[i].id]);
+
+	return PTR_ERR(clk);
 }
 EXPORT_SYMBOL_GPL(hisi_clk_register_mux);
 
-void hisi_clk_register_divider(const struct hisi_divider_clock *clks,
+int hisi_clk_register_divider(const struct hisi_divider_clock *clks,
 				      int nums, struct hisi_clock_data *data)
 {
 	struct clk *clk;
@@ -165,7 +218,7 @@ void hisi_clk_register_divider(const struct hisi_divider_clock *clks,
 		if (IS_ERR(clk)) {
 			pr_err("%s: failed to register clock %s\n",
 			       __func__, clks[i].name);
-			continue;
+			goto err;
 		}
 
 		if (clks[i].alias)
@@ -173,10 +226,18 @@ void hisi_clk_register_divider(const struct hisi_divider_clock *clks,
 
 		data->clk_data.clks[clks[i].id] = clk;
 	}
+
+	return 0;
+
+err:
+	while (i--)
+		clk_unregister_divider(data->clk_data.clks[clks[i].id]);
+
+	return PTR_ERR(clk);
 }
 EXPORT_SYMBOL_GPL(hisi_clk_register_divider);
 
-void hisi_clk_register_gate(const struct hisi_gate_clock *clks,
+int hisi_clk_register_gate(const struct hisi_gate_clock *clks,
 				       int nums, struct hisi_clock_data *data)
 {
 	struct clk *clk;
@@ -194,7 +255,7 @@ void hisi_clk_register_gate(const struct hisi_gate_clock *clks,
 		if (IS_ERR(clk)) {
 			pr_err("%s: failed to register clock %s\n",
 			       __func__, clks[i].name);
-			continue;
+			goto err;
 		}
 
 		if (clks[i].alias)
@@ -202,6 +263,14 @@ void hisi_clk_register_gate(const struct hisi_gate_clock *clks,
 
 		data->clk_data.clks[clks[i].id] = clk;
 	}
+
+	return 0;
+
+err:
+	while (i--)
+		clk_unregister_gate(data->clk_data.clks[clks[i].id]);
+
+	return PTR_ERR(clk);
 }
 EXPORT_SYMBOL_GPL(hisi_clk_register_gate);