2015-05-18 14:01:23

by Ricky Liang

[permalink] [raw]
Subject: [PATCH v3] clk: mediatek: Initialize clk_init_data

The variable init (struct clk_init_data) is allocated on the stack.
We weren't initializing the .flags field, so it contains random junk,
which can cause all kinds of interesting issues when the flags are
parsed by clk_register.

Signed-off-by: Ricky Liang <[email protected]>
---
drivers/clk/mediatek/clk-gate.c | 2 +-
drivers/clk/mediatek/clk-pll.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/clk/mediatek/clk-gate.c b/drivers/clk/mediatek/clk-gate.c
index 9d77ee3..5702036 100644
--- a/drivers/clk/mediatek/clk-gate.c
+++ b/drivers/clk/mediatek/clk-gate.c
@@ -109,7 +109,7 @@ struct clk *mtk_clk_register_gate(
{
struct mtk_clk_gate *cg;
struct clk *clk;
- struct clk_init_data init;
+ struct clk_init_data init = {};

cg = kzalloc(sizeof(*cg), GFP_KERNEL);
if (!cg)
diff --git a/drivers/clk/mediatek/clk-pll.c b/drivers/clk/mediatek/clk-pll.c
index 66154ca..44409e9 100644
--- a/drivers/clk/mediatek/clk-pll.c
+++ b/drivers/clk/mediatek/clk-pll.c
@@ -268,7 +268,7 @@ static struct clk *mtk_clk_register_pll(const struct mtk_pll_data *data,
void __iomem *base)
{
struct mtk_clk_pll *pll;
- struct clk_init_data init;
+ struct clk_init_data init = {};
struct clk *clk;
const char *parent_name = "clk26m";

--
2.1.2


2015-05-18 14:11:36

by Sascha Hauer

[permalink] [raw]
Subject: Re: [PATCH v3] clk: mediatek: Initialize clk_init_data

On Mon, May 18, 2015 at 10:00:26PM +0800, Ricky Liang wrote:
> The variable init (struct clk_init_data) is allocated on the stack.
> We weren't initializing the .flags field, so it contains random junk,
> which can cause all kinds of interesting issues when the flags are
> parsed by clk_register.
>
> Signed-off-by: Ricky Liang <[email protected]>

Acked-by: Sascha Hauer <[email protected]>

Sascha

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2015-05-20 01:41:40

by Stephen Boyd

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Subject: Re: [PATCH v3] clk: mediatek: Initialize clk_init_data

On 05/18, Ricky Liang wrote:
> The variable init (struct clk_init_data) is allocated on the stack.
> We weren't initializing the .flags field, so it contains random junk,
> which can cause all kinds of interesting issues when the flags are
> parsed by clk_register.
>
> Signed-off-by: Ricky Liang <[email protected]>
> ---

Applied to clk-next

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