[PATCH] ASoC: stm32: sai: Use of_device_get_match_data() tosimplify code

[tangbin]

Hi Mark & Olivier：

On 2022/5/24 2:57, Mark Brown wrote:
> On Mon, May 23, 2022 at 03:28:48PM +0200, Olivier MOYSAN wrote:
>
>> The current patch requires a change in the driver.
>> Either changing STM_SAI_x_ID enums, or replacing data by a struct.
>> For instance:
>> struct stm32_sai_comp_data {
>> 	unsigned int id;
>> }
>> struct stm32_sai_comp_data stm32_sai_comp_data_a = {
>> 	.id = STM_SAI_A_ID;
>> }
>> struct of_device_id stm32_sai_sub_ids[] = {
>> 	.data = &stm32_sai_comp_data_a},
>> }
> Either approach works for me (or a revert for that matter).

     Thanks for your advice, I was thoughtless.

     I think change the date of STM_SAI_x_ID maybe simple. But if we 
don't change the id,

what about add a "#define" like the line 47:

#define STM_SAI_IS_SUB(x) ((x)->id == STM_SAI_A_ID || (x)->id == 
STM_SAI_B_ID)

then in the judgement, wu use:

     sai->id = (uintptr_t)of_device_get_match_data(&pdev->dev);

     if (!STM_SAI_IS_SUB(sai))

             return -EINVAL;


if you think that's ok, I will send patch v2 for you .

Thanks

Tang Bin