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Subject[PATCHv2 1/1] clk/zynq: Fix possible memory leak
Date
The zynq_clk_register_fclk function can leak memory (fclk_lock) when unable
to alloc memory for fclk_gate_lock

Signed-off-by: Felipe Pena <felipensp@gmail.com>
Acked-by: Sören Brinkmann <soren.brinkmann@xilinx.com>
---
drivers/clk/zynq/clkc.c | 16 +++++++++++++++-
1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/drivers/clk/zynq/clkc.c b/drivers/clk/zynq/clkc.c
index cc40fe6..10772aa 100644
--- a/drivers/clk/zynq/clkc.c
+++ b/drivers/clk/zynq/clkc.c
@@ -117,13 +117,19 @@ static void __init zynq_clk_register_fclk(enum zynq_clk fclk,
goto err;
fclk_gate_lock = kmalloc(sizeof(*fclk_gate_lock), GFP_KERNEL);
if (!fclk_gate_lock)
- goto err;
+ goto err_fclk_gate_lock;
spin_lock_init(fclk_lock);
spin_lock_init(fclk_gate_lock);

mux_name = kasprintf(GFP_KERNEL, "%s_mux", clk_name);
+ if (!mux_name)
+ goto err_mux_name;
div0_name = kasprintf(GFP_KERNEL, "%s_div0", clk_name);
+ if (!div0_name)
+ goto err_div0_name;
div1_name = kasprintf(GFP_KERNEL, "%s_div1", clk_name);
+ if (!div1_name)
+ goto err_div1_name;

clk = clk_register_mux(NULL, mux_name, parents, 4,
CLK_SET_RATE_NO_REPARENT, fclk_ctrl_reg, 4, 2, 0,
@@ -147,6 +153,14 @@ static void __init zynq_clk_register_fclk(enum zynq_clk fclk,

return;

+err_div1_name:
+ kfree(div0_name);
+err_div0_name:
+ kfree(mux_name);
+err_mux_name:
+ kfree(fclk_gate_lock);
+err_fclk_gate_lock:
+ kfree(fclk_lock);
err:
clks[fclk] = ERR_PTR(-ENOMEM);
}
--
1.7.10.4
--
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