[PATCH v3 2/2] drm/probe_helper: warning on poll_enabled for issue catching

[Quan, Evan]

[AMD Official Use Only - General]

Series is acked-by: Evan Quan <evan.quan at amd.com>

> -----Original Message-----
> From: amd-gfx <amd-gfx-bounces at lists.freedesktop.org> On Behalf Of
> Guchun Chen
> Sent: Friday, March 10, 2023 9:02 AM
> To: amd-gfx at lists.freedesktop.org; dri-devel at lists.freedesktop.org;
> Deucher, Alexander <Alexander.Deucher at amd.com>; Zhang, Hawking
> <Hawking.Zhang at amd.com>; dmitry.baryshkov at linaro.org;
> spasswolf at web.de; mike at fireburn.co.uk
> Cc: Chen, Guchun <Guchun.Chen at amd.com>
> Subject: [PATCH v3 2/2] drm/probe_helper: warning on poll_enabled for
> issue catching
> 
> In order to catch issues in other drivers to ensure proper call sequence of
> polling function.
> 
> v2: drop Fixes tag in commit message
> 
> Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/2411
> Reported-by: Bert Karwatzki <spasswolf at web.de>
> Suggested-by: Dmitry Baryshkov <dmitry.baryshkov at linaro.org>
> Signed-off-by: Guchun Chen <guchun.chen at amd.com>
> ---
>  drivers/gpu/drm/drm_probe_helper.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/gpu/drm/drm_probe_helper.c
> b/drivers/gpu/drm/drm_probe_helper.c
> index 8127be134c39..85e0e80d4a52 100644
> --- a/drivers/gpu/drm/drm_probe_helper.c
> +++ b/drivers/gpu/drm/drm_probe_helper.c
> @@ -852,6 +852,8 @@ EXPORT_SYMBOL(drm_kms_helper_is_poll_worker);
>   */
>  void drm_kms_helper_poll_disable(struct drm_device *dev)  {
> +	WARN_ON(!dev->mode_config.poll_enabled);
> +
>  	if (dev->mode_config.poll_running)
>  		drm_kms_helper_disable_hpd(dev);
> 
> --
> 2.25.1