Re: [PATCH] ASoC: samsung: i2s: Check before clk_unregister() not needed

[Krzysztof Kozlowski]

On 10/06/2022 18:15, Christophe JAILLET wrote:
> Le 29/05/2022 à 10:06, Krzysztof Kozlowski a écrit :
>> On 27/05/2022 08:54, Yihao Han wrote:
>>> clk_unregister() already checks the clk ptr using
>>> !clk || WARN_ON_ONCE(IS_ERR(clk)) so there is no need to check it
>>> again before calling it.
>>>
>>
>> No, this explanation does not make sense. clk_unregister() warns and
>> this code is not equivalent.
>>
>>
>>
>> Best regards,
>> Krzysztof
>>
> 
> Hi,
> 
> Moreover, as pointed out by greg in [1] on some plateform the assertion 
> in the commit description is wrong. His message is about clk_disable() 
> but, IIUC, it makes sense for clk_unregister() as well. See [2] on the 
> sh plateform.
> 

Yes, this is true as well, although does not have the practical impact
on this driver as it uses platforms with common clock framework.


Best regards,
Krzysztof