Re: [PATCH v2 04/13] bus: ts-nbus: use gpiod_multi_set_value_cansleep

[David Lechner <dlechner@xxxxxxxxxxxx>]

On 2/7/25 6:17 AM, Andy Shevchenko wrote:
> +Yury.
> 
> On Fri, Feb 7, 2025 at 2:15 PM Andy Shevchenko
> <andy.shevchenko@xxxxxxxxx> wrote:
>> On Fri, Feb 7, 2025 at 12:48 AM David Lechner <dlechner@xxxxxxxxxxxx> wrote:
> 
> ...
> 
>>>  static void ts_nbus_write_byte(struct ts_nbus *ts_nbus, u8 byte)
>>>  {
>>> -       struct gpio_descs *gpios = ts_nbus->data;
>>>         DECLARE_BITMAP(values, 8);
>>>
>>>         values[0] = byte;
>>>
>>> -       gpiod_set_array_value_cansleep(8, gpios->desc, gpios->info, values);
>>> +       gpiod_multi_set_value_cansleep(ts_nbus->data, values);
>>
>> As I said before, this is buggy code on BE64. Needs to be fixed.
> 
> Or isn't? Do we have a test case in bitmap for such a case?
> 
>>>  }
> 
> 

Maybe not the best style, but I don't think it is buggy. Bitmaps are always
handled in long-sized chunks and not cast to bytes so endianness doesn't affect
it. I didn't see an explicit test, but bitmap_read() and bitmap_write() use
array access like this so indirectly it is being tested.