[v3 04/24] clk: mediatek: Add API for clock resource recycle

[Chun-Jie Chen]

In order to avoid resource leak when fail clock registration appears,
so adds the common interface to handle it.

Signed-off-by: Chun-Jie Chen <chun-jie.chen@xxxxxxxxxxxx>
Reviewed-by: Chen-Yu Tsai <wenst@xxxxxxxxxxxx>
---
 drivers/clk/mediatek/clk-mtk.c | 9 +++++++++
 drivers/clk/mediatek/clk-mtk.h | 1 +
 2 files changed, 10 insertions(+)

diff --git a/drivers/clk/mediatek/clk-mtk.c b/drivers/clk/mediatek/clk-mtk.c
index 4b6096c44d74..c3d385c0cfcb 100644
--- a/drivers/clk/mediatek/clk-mtk.c
+++ b/drivers/clk/mediatek/clk-mtk.c
@@ -43,6 +43,15 @@ struct clk_onecell_data *mtk_alloc_clk_data(unsigned int clk_num)
 	return NULL;
 }
 
+void mtk_free_clk_data(struct clk_onecell_data *clk_data)
+{
+	if (!clk_data)
+		return;
+
+	kfree(clk_data->clks);
+	kfree(clk_data);
+}
+
 void mtk_clk_register_fixed_clks(const struct mtk_fixed_clk *clks,
 		int num, struct clk_onecell_data *clk_data)
 {
diff --git a/drivers/clk/mediatek/clk-mtk.h b/drivers/clk/mediatek/clk-mtk.h
index 7de41c3b3206..0ff289d93452 100644
--- a/drivers/clk/mediatek/clk-mtk.h
+++ b/drivers/clk/mediatek/clk-mtk.h
@@ -202,6 +202,7 @@ void mtk_clk_register_dividers(const struct mtk_clk_divider *mcds,
 				struct clk_onecell_data *clk_data);
 
 struct clk_onecell_data *mtk_alloc_clk_data(unsigned int clk_num);
+void mtk_free_clk_data(struct clk_onecell_data *clk_data);
 
 #define HAVE_RST_BAR	BIT(0)
 #define PLL_AO		BIT(1)
-- 
2.18.0