[PATCH 4.19 244/346] clk: ti: Fix memleak in ti_fapll_synth_setup

Greg Kroah-Hartman
2020-12-28T16:00:31Z

From: Zhang Qilong <zhangqilong3@huawei.com>

[ Upstream commit 8c6239f6e95f583bb763d0228e02d4dd0fb3d492 ]

If clk_register fails, we should goto free branch
before function returns to prevent memleak.

Fixes: 163152cbbe321 ("clk: ti: Add support for FAPLL on dm816x")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com>
Link: https://lore.kernel.org/r/20201113131623.2098222-1-zhangqilong3@huawei.com
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/clk/ti/fapll.c | 11 +++++++++--
1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/drivers/clk/ti/fapll.c b/drivers/clk/ti/fapll.c
index 071af44b1ba85..e33ce851837e4 100644
--- a/drivers/clk/ti/fapll.c
+++ b/drivers/clk/ti/fapll.c
@@ -497,6 +497,7 @@ static struct clk * __init ti_fapll_synth_setup(struct fapll_data *fd,
{
struct clk_init_data *init;
struct fapll_synth *synth;
+ struct clk *clk = ERR_PTR(-ENOMEM);

init = kzalloc(sizeof(*init), GFP_KERNEL);
if (!init)
@@ -519,13 +520,19 @@ static struct clk * __init ti_fapll_synth_setup(struct fapll_data *fd,
synth->hw.init = init;
synth->clk_pll = pll_clk;

- return clk_register(NULL, &synth->hw);
+ clk = clk_register(NULL, &synth->hw);
+ if (IS_ERR(clk)) {
+ pr_err("failed to register clock\n");
+ goto free;
+ }
+
+ return clk;

free:
kfree(synth);
kfree(init);

- return ERR_PTR(-ENOMEM);
+ return clk;
}

static void __init ti_fapll_setup(struct device_node *node)
--
2.27.0