[Nouveau] [PATCH 3/3] drm/nouveau/kms/nv50-: init hpd_irq_lock for PIOR DP

[Karol Herbst]

On Wed, Jul 19, 2023 at 6:41 AM Ben Skeggs <skeggsb at gmail.com> wrote:
>
> From: Ben Skeggs <bskeggs at redhat.com>
>
> Fixes OOPS on boards with ANX9805 DP encoders.
>
> Signed-off-by: Ben Skeggs <bskeggs at redhat.com>
> ---
>  drivers/gpu/drm/nouveau/dispnv50/disp.c | 4 ++++
>  1 file changed, 4 insertions(+)
>
> diff --git a/drivers/gpu/drm/nouveau/dispnv50/disp.c b/drivers/gpu/drm/nouveau/dispnv50/disp.c
> index 42e1665ba11a..1ecd3d63b108 100644
> --- a/drivers/gpu/drm/nouveau/dispnv50/disp.c
> +++ b/drivers/gpu/drm/nouveau/dispnv50/disp.c
> @@ -1873,6 +1873,8 @@ nv50_pior_destroy(struct drm_encoder *encoder)
>         nvif_outp_dtor(&nv_encoder->outp);
>
>         drm_encoder_cleanup(encoder);
> +
> +       mutex_destroy(&nv_encoder->dp.hpd_irq_lock);
>         kfree(encoder);
>  }
>
> @@ -1917,6 +1919,8 @@ nv50_pior_create(struct drm_connector *connector, struct dcb_output *dcbe)
>         nv_encoder->i2c = ddc;
>         nv_encoder->aux = aux;
>
> +       mutex_init(&nv_encoder->dp.hpd_irq_lock);
> +
>         encoder = to_drm_encoder(nv_encoder);
>         encoder->possible_crtcs = dcbe->heads;
>         encoder->possible_clones = 0;
> --
> 2.41.0
>

Reviewed-by: Karol Herbst <kherbst at redhat.com>