Re: [PATCH] drm/tests: fix drm_test_fb_xrgb8888_to_xrgb2101010 on big endian

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Dave Airlie <airlied@xxxxxxxxx> writes:

Hello Dave,

> From: Dave Airlie <airlied@xxxxxxxxxx>
>
> This test is failing for me on s390x and there is a report on the list from ppc64.
>
> This aligns it with the argb test that doesn't fail.
>
> Fixes: 15bda1f8de5d ("drm/tests: Add calls to drm_fb_blit() on supported format conversion tests")
> Reported-by: Erhard Furtner <erhard_f@xxxxxxxxxxx>
> Signed-off-by: Dave Airlie <airlied@xxxxxxxxxx>
> ---
>  drivers/gpu/drm/tests/drm_format_helper_test.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/tests/drm_format_helper_test.c b/drivers/gpu/drm/tests/drm_format_helper_test.c
> index 08992636ec05..d4ce2d7ced4e 100644
> --- a/drivers/gpu/drm/tests/drm_format_helper_test.c
> +++ b/drivers/gpu/drm/tests/drm_format_helper_test.c
> @@ -991,7 +991,7 @@ static void drm_test_fb_xrgb8888_to_xrgb2101010(struct kunit *test)
>  		NULL : &result->dst_pitch;
>  
>  	drm_fb_xrgb8888_to_xrgb2101010(&dst, dst_pitch, &src, &fb, &params->clip, &fmtcnv_state);
> -	buf = le32buf_to_cpu(test, buf, dst_size / sizeof(u32));
> +	buf = le32buf_to_cpu(test, (__force const __le32 *)buf, dst_size / sizeof(u32));
>  	KUNIT_EXPECT_MEMEQ(test, buf, result->expected, dst_size);
>  
>  	buf = dst.vaddr; /* restore original value of buf */
> @@ -1002,6 +1002,8 @@ static void drm_test_fb_xrgb8888_to_xrgb2101010(struct kunit *test)
>  	blit_result = drm_fb_blit(&dst, dst_pitch, DRM_FORMAT_XRGB2101010, &src, &fb,
>  				  &params->clip, &fmtcnv_state);
>  
> +	buf = le32buf_to_cpu(test, (__force const __le32 *)buf, dst_size / sizeof(u32));
> +
>  	KUNIT_EXPECT_FALSE(test, blit_result);
>  	KUNIT_EXPECT_MEMEQ(test, buf, result->expected, dst_size);
>  }

Looks good to me, and as you said it makes the test consistent with the
drm_fb_xrgb8888_to_argb2101010() test that didn't fail for you on s390x.

Reviewed-by: Javier Martinez Canillas <javierm@xxxxxxxxxx>

-- 
Best regards,

Javier Martinez Canillas
Core Platforms
Red Hat




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