Re: [PATCH 1/2] clk: qcom: Constify qcom_cc_driver_data

[Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>]

On 31/03/2026 12:10, Konrad Dybcio wrote:
> On 3/31/26 12:09 PM, Krzysztof Kozlowski wrote:
>> On 31/03/2026 11:33, Konrad Dybcio wrote:
>>> On 3/31/26 11:17 AM, Krzysztof Kozlowski wrote:
>>>> The static 'struct qcom_cc_driver_data' contains probe match-like data
>>>> and is not modified: neither by the driver defining it nor by common.c
>>>> code using it.
>>>>
>>>> Make it const for code safety and code readability.
>>>>
>>>> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
>>>> ---
>>>
>>> [...]
>>>
>>>> --- a/drivers/clk/qcom/common.h
>>>> +++ b/drivers/clk/qcom/common.h
>>>> @@ -49,7 +49,7 @@ struct qcom_cc_desc {
>>>>  	size_t num_icc_hws;
>>>>  	unsigned int icc_first_node_id;
>>>>  	bool use_rpm;
>>>> -	struct qcom_cc_driver_data *driver_data;
>>>> +	const struct qcom_cc_driver_data *driver_data;
>>>
>>> This can be a const ptr to const data, even
>>
>> None of other elements in 'qcom_cc_desc' is const pointer, even though
>> they also could. If doing this change, let's make it consistent - so
>> shall all of them be const?
> 
> I thought about it, but then it turns out that videocc-sm8550.c has:
> 
> video_cc_sm8550_driver_data.clk_cbcrs = video_cc_sm8650_critical_cbcrs
> 
> So we'd have to duplicate the entire struct

No, that's not a problem. Pointer is not modified and we speak here
about const pointer.

Best regards,
Krzysztof