RE: [PATCH v8 5/5] spi: dw: Round of n_bytes to power of 2

[David Laight <David.Laight@xxxxxxxxxx>]

From: Joy Chakraborty
> Sent: 21 April 2023 10:22
...
> Sure, I can make the following change in the formatting and send the
> patch series:
>          dws->n_bytes =
>                  roundup_pow_of_two(DIV_ROUND_UP(transfer->bits_per_word,
>                                                  BITS_PER_BYTE));

Won't checkpatch bleat about that?

Is it ever actually valid for the caller to provide a
value that isn't 8, 16 or 32 ?

I'm sure it looked as though some other lengths/counts
where likely to go badly wrong.

I know there are times when it is useful to bit-bang 'odd'
numbers of bits - like command+address+delay for fast reads
but that is a sub-32bit transfer so (at least somewhere)
is 1 word but not all the bits.

	David

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