linux-kernel - Re: [PATCH] clk: keystone: gate: fix clk_init

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Date:	Thu, 30 Jan 2014 18:56:45 +0200
From:	Ivan Khoronzhuk <ivan.khoronzhuk@...com>
To:	Santosh Shilimkar <santosh.shilimkar@...com>
CC:	"mturquette@...aro.org" <mturquette@...aro.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] clk: keystone: gate: fix clk_init_data initialization

Ok

On 01/30/2014 04:32 PM, Santosh Shilimkar wrote:
> On Thursday 30 January 2014 08:49 AM, Ivan Khoronzhuk wrote:
>> Yes. As result 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.
>>
> Can you please update the change log with above information.
>
>> On 01/30/2014 03:26 PM, Shilimkar, Santosh wrote:
>>> Can u capture the issue withiout this fix?
>>>
>>> Sent from my Android phone using TouchDown (www.nitrodesk.com)
>>>
>>> -----Original Message-----
>>> *From:* Khoronzhuk, Ivan [ivan.khoronzhuk@...com]
>>> *Received:* Thursday, 30 Jan 2014, 6:37am
>>> *To:* Shilimkar, Santosh [santosh.shilimkar@...com]
>>> *CC:* mturquette@...aro.org [mturquette@...aro.org];
>>> linux-arm-kernel@...ts.infradead.org [linux-arm-kernel@...ts.infradead.org];
>>> linux-kernel@...r.kernel.org [linux-kernel@...r.kernel.org]; Khoronzhuk, Ivan
>>> [ivan.khoronzhuk@...com]
>>> *Subject:* [PATCH] clk: keystone: gate: fix clk_init_data initialization
>>>
>>> In clk_register_psc() function clk_init_data struct is allocated
>>> in the stack. All members of this struct should be initialized
>>> before using otherwise it will contain garbage. So initialize flags
>>> in this structure too.
>>>
>>> Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@...com>
>>> ---
>>>     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
>>>

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