Re: [PATCH] ALSA: kunit: use const qualifier for immutable data

[Ivan Orlov <ivan.orlov0322@xxxxxxxxx>]

On 4/26/24 00:36, Takashi Sakamoto wrote:
> Some data for testing is immutable. In the case, the const qualifier is
> available for any loader to place it to read-only segment.

Hi Takashi,

Thank you for sending this patch. It would be good if you add me and 
Jaroslav into the recipients list as well next time.

> Fixes: 3e39acf56ede ("ALSA: core: Add sound core KUnit test")

I'm not sure if the "Fixes" tag is applicable here, since this patch 
doesn't fix a bug.

Anyway,

Acked-by: Ivan Orlov <ivan.orlov0322@xxxxxxxxx>

> Signed-off-by: Takashi Sakamoto <o-takashi@xxxxxxxxxxxxx>
> ---
>   sound/core/sound_kunit.c | 8 ++++----
>   1 file changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/sound/core/sound_kunit.c b/sound/core/sound_kunit.c
> index e34c4317f5eb..165bd0f5338a 100644
> --- a/sound/core/sound_kunit.c
> +++ b/sound/core/sound_kunit.c
> @@ -45,7 +45,7 @@ struct avail_test_data {
>   	snd_pcm_uframes_t expected_avail;
>   };
>   
> -static struct snd_format_test_data valid_fmt[] = {
> +static const struct snd_format_test_data valid_fmt[] = {
>   	DEFINE_FORMAT(S8, 8, 8, -1, 1, SILENCE()),
>   	DEFINE_FORMAT(U8, 8, 8, -1, 0, SILENCE(0x80)),
>   	DEFINE_FORMAT(S16_LE, 16, 16, 1, 1, SILENCE()),
> @@ -154,7 +154,7 @@ static void test_format_endianness(struct kunit *test)
>   	KUNIT_EXPECT_EQ(test, snd_pcm_format_big_endian(WRONG_FORMAT_2), -EINVAL);
>   }
>   
> -static void _test_fill_silence(struct kunit *test, struct snd_format_test_data *data,
> +static void _test_fill_silence(struct kunit *test, const struct snd_format_test_data *data,
>   			       u8 *buffer, size_t samples_count)
>   {
>   	size_t sample_bytes = data->physical_bits >> 3;
> @@ -191,7 +191,7 @@ static snd_pcm_uframes_t calculate_boundary(snd_pcm_uframes_t buffer_size)
>   	return boundary;
>   }
>   
> -static struct avail_test_data p_avail_data[] = {
> +static const struct avail_test_data p_avail_data[] = {
>   	/* buf_size + hw_ptr < appl_ptr => avail = buf_size + hw_ptr - appl_ptr + boundary */
>   	{ 128, 1000, 1129, 1073741824UL - 1 },
>   	/*
> @@ -220,7 +220,7 @@ static void test_playback_avail(struct kunit *test)
>   	}
>   }
>   
> -static struct avail_test_data c_avail_data[] = {
> +static const struct avail_test_data c_avail_data[] = {
>   	/* hw_ptr - appl_ptr < 0 => avail = hw_ptr - appl_ptr + boundary */
>   	{ 128, 1000, 1001, 1073741824UL - 1 },
>   	/* standard case: avail = hw_ptr - appl_ptr */

--
Kind regards,
Ivan Orlov