linux-kernel - Re: [PATCH v2] drm/tests: modeset: Add drm connector atomic_[duplicate/destroy]

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Message-ID: <93b9e1dc-f8d5-4b8d-a7d2-27ba8e09dd54@ghiti.fr>
Date: Mon, 1 Sep 2025 12:41:13 +0200
From: Alexandre Ghiti <alex@...ti.fr>
To: Xiaolei Wang <xiaolei.wang@...driver.com>,
 dmitry.baryshkov@....qualcomm.com, maarten.lankhorst@...ux.intel.com,
 mripard@...nel.org, tzimmermann@...e.de, airlied@...il.com, simona@...ll.ch,
 jani.nikula@...el.com, ville.syrjala@...ux.intel.com
Cc: dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] drm/tests: modeset: Add drm connector
 atomic_[duplicate/destroy]_state

Hi Xiaolei,


On 8/27/25 10:45, Xiaolei Wang wrote:
> Commit 66671944e176 ("drm/tests: helpers: Add atomic helpers")
> added the atomic state path, so adding the drm connector
> atomic_[duplicate/destroy]_state is also necessary.
>
> WARNING: CPU: 0 PID: 96 at drivers/gpu/drm/drm_connector.c:234 drm_connector_init_only+0x934/0xee0
>   Call trace:
>    drm_connector_init_only+0x934/0xee0 (P)
>    drmm_connector_init+0xe0/0x1b0
>    drm_client_modeset_test_init+0x290/0x534
>    kunit_try_run_case+0x110/0x3b4
>    kunit_generic_run_threadfn_adapter+0x80/0xec
>    kthread+0x3b8/0x6c0
>    ret_from_fork+0x10/0x20
>
> Fixes: 66671944e176 ("drm/tests: helpers: Add atomic helpers")
> Signed-off-by: Xiaolei Wang <xiaolei.wang@...driver.com>
> Reviewed-by: Maxime Ripard <mripard@...nel.org>
> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
> ---
>
> v1: https://patchew.org/linux/20250811063403.98739-1-xiaolei.wang@windriver.com/
>
> v2: compared with v1, add Fixes tag
>
>   drivers/gpu/drm/tests/drm_client_modeset_test.c | 4 ++++
>   1 file changed, 4 insertions(+)
>
> diff --git a/drivers/gpu/drm/tests/drm_client_modeset_test.c b/drivers/gpu/drm/tests/drm_client_modeset_test.c
> index 3f44fe5e92e4..e702a27c2368 100644
> --- a/drivers/gpu/drm/tests/drm_client_modeset_test.c
> +++ b/drivers/gpu/drm/tests/drm_client_modeset_test.c
> @@ -12,6 +12,7 @@
>   #include <drm/drm_modes.h>
>   #include <drm/drm_modeset_helper_vtables.h>
>   #include <drm/drm_probe_helper.h>
> +#include <drm/drm_atomic_state_helper.h>
>   
>   struct drm_client_modeset_test_priv {
>   	struct drm_device *drm;
> @@ -48,6 +49,9 @@ static const struct drm_connector_helper_funcs drm_client_modeset_connector_help
>   };
>   
>   static const struct drm_connector_funcs drm_client_modeset_connector_funcs = {
> +	.reset                  = drm_atomic_helper_connector_reset,
> +	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
> +	.atomic_destroy_state   = drm_atomic_helper_connector_destroy_state,
>   };
>   
>   static int drm_client_modeset_test_init(struct kunit *test)


Tested-by: Alexandre Ghiti <alexghiti@...osinc.com>

Thanks,

Alex