linux-kernel - Re: [PATCH 1/2] drm/tests: Fix endian warning

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Message-ID: <9f420ae9-beb5-43b0-8447-6f00d7f72535@suse.de>
Date: Mon, 30 Jun 2025 13:37:17 +0200
From: Thomas Zimmermann <tzimmermann@...e.de>
To: José Expósito <jose.exposito89@...il.com>,
 maarten.lankhorst@...ux.intel.com
Cc: mripard@...nel.org, airlied@...il.com, simona@...ll.ch, lumag@...nel.org,
 cristian.ciocaltea@...labora.com, gcarlos@...root.org,
 dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] drm/tests: Fix endian warning



Am 30.06.25 um 11:00 schrieb José Expósito:
> When compiling with sparse enabled, this warning is thrown:
>
>    warning: incorrect type in argument 2 (different base types)
>       expected restricted __le32 const [usertype] *buf
>       got unsigned int [usertype] *[assigned] buf
>
> Add a cast to fix it.
>
> Fixes: 453114319699 ("drm/format-helper: Add KUnit tests for drm_fb_xrgb8888_to_xrgb2101010()")
> Signed-off-by: José Expósito <jose.exposito89@...il.com>

Reviewed-by: Thomas Zimmermann <tzimmermann@...e.de>

> ---
>   drivers/gpu/drm/tests/drm_format_helper_test.c | 2 +-
>   1 file changed, 1 insertion(+), 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 7299fa8971ce..86829e1cb7f0 100644
> --- a/drivers/gpu/drm/tests/drm_format_helper_test.c
> +++ b/drivers/gpu/drm/tests/drm_format_helper_test.c
> @@ -1033,7 +1033,7 @@ 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 */

-- 
--
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Frankenstrasse 146, 90461 Nuernberg, Germany
GF: Ivo Totev, Andrew Myers, Andrew McDonald, Boudien Moerman
HRB 36809 (AG Nuernberg)