[PATCH v2] clk: keystone: gate: fix clk_init_data initialization

[PATCH v2] clk: keystone: gate: fix clk_init_data initialization

[Ivan Khoronzhuk]

The clk_init_data struct is allocated in the stack. All members of
this struct should be initialized before using otherwise it will
lead to unpredictable situation as it can contain garbage.

Ultimately the clk->flag field contains garbage. In my case it leads
that flag CLK_IGNORE_UNUSED is set for most of clocks. As result a
bunch of unused clocks cannot be disabled.

So initialize flags in this structure too.

Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@ti.com>
---
Based on
git://git.kernel.org/pub/scm/linux/kernel/git/ssantosh/linux-keystone.git
keystone/master

v1..v2:
- updated commit description only

 drivers/clk/keystone/gate.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/clk/keystone/gate.c b/drivers/clk/keystone/gate.c
index 17a5983..86f1e36 100644
--- a/drivers/clk/keystone/gate.c
+++ b/drivers/clk/keystone/gate.c
@@ -179,6 +179,7 @@ static struct clk *clk_register_psc(struct device *dev,
 
 	init.name = name;
 	init.ops = &clk_psc_ops;
+	init.flags = 0;
 	init.parent_names = (parent_name ? &parent_name : NULL);
 	init.num_parents = (parent_name ? 1 : 0);
 
-- 
1.8.3.2

Re: [PATCH v2] clk: keystone: gate: fix clk_init_data initialization

[Santosh Shilimkar]

On Thursday 30 January 2014 01:03 PM, Ivan Khoronzhuk wrote:
> The clk_init_data struct is allocated in the stack. All members of
> this struct should be initialized before using otherwise it will
> lead to unpredictable situation as it can contain garbage.
> 
> Ultimately the clk->flag field contains garbage. In my case it leads
> that flag CLK_IGNORE_UNUSED is set for most of clocks. As result a
> bunch of unused clocks cannot be disabled.
> 
> So initialize flags in this structure too.
> 
> Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@ti.com>
> ---
> Based on
> git://git.kernel.org/pub/scm/linux/kernel/git/ssantosh/linux-keystone.git
> keystone/master
> 
> v1..v2:
> - updated commit description only
> 
Thanks for the update. 

>  drivers/clk/keystone/gate.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/clk/keystone/gate.c b/drivers/clk/keystone/gate.c
> index 17a5983..86f1e36 100644
> --- a/drivers/clk/keystone/gate.c
> +++ b/drivers/clk/keystone/gate.c
> @@ -179,6 +179,7 @@ static struct clk *clk_register_psc(struct device *dev,
>  
>  	init.name = name;
>  	init.ops = &clk_psc_ops;
> +	init.flags = 0;
>  	init.parent_names = (parent_name ? &parent_name : NULL);
>  	init.num_parents = (parent_name ? 1 : 0);
>  
>