linux-kernel - [PATCH 4.4 13/67] clk: rockchip: free memory in error cases when registering clock branches

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Message-Id: <20160509071837.913426993@linuxfoundation.org>
Date:	Mon,  9 May 2016 09:18:18 +0200
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Shawn Lin <shawn.lin@...k-chips.com>,
	Heiko Stuebner <heiko@...ech.de>
Subject: [PATCH 4.4 13/67] clk: rockchip: free memory in error cases when registering clock branches

4.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Shawn Lin <shawn.lin@...k-chips.com>

commit 2467b6745e0ae9c6cdccff24c4cceeb14b1cce3f upstream.

Add free memeory if rockchip_clk_register_branch fails.

Fixes: a245fecbb806 ("clk: rockchip: add basic infrastructure...")
Signed-off-by: Shawn Lin <shawn.lin@...k-chips.com>
Signed-off-by: Heiko Stuebner <heiko@...ech.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/clk/rockchip/clk.c |    9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

--- a/drivers/clk/rockchip/clk.c
+++ b/drivers/clk/rockchip/clk.c
@@ -70,7 +70,7 @@ static struct clk *rockchip_clk_register
 	if (gate_offset >= 0) {
 		gate = kzalloc(sizeof(*gate), GFP_KERNEL);
 		if (!gate)
-			return ERR_PTR(-ENOMEM);
+			goto err_gate;
 
 		gate->flags = gate_flags;
 		gate->reg = base + gate_offset;
@@ -82,7 +82,7 @@ static struct clk *rockchip_clk_register
 	if (div_width > 0) {
 		div = kzalloc(sizeof(*div), GFP_KERNEL);
 		if (!div)
-			return ERR_PTR(-ENOMEM);
+			goto err_div;
 
 		div->flags = div_flags;
 		div->reg = base + muxdiv_offset;
@@ -102,6 +102,11 @@ static struct clk *rockchip_clk_register
 				     flags);
 
 	return clk;
+err_div:
+	kfree(gate);
+err_gate:
+	kfree(mux);
+	return ERR_PTR(-ENOMEM);
 }
 
 static struct clk *rockchip_clk_register_frac_branch(const char *name,