[PATCH v4 02/16] drm/i915/hdcp: Get conn while content_type changed

[Ramalingam C]

On 2020-10-27 at 22:11:54 +0530, Anshuman Gupta wrote:
> Get DRM connector reference count while scheduling a prop work
> to avoid any possible destroy of DRM connector when it is in
> DRM_CONNECTOR_REGISTERED state.
> 
> Fixes: a6597faa2d59 ("drm/i915: Protect workers against disappearing connectors")
> Cc: Sean Paul <seanpaul at chromium.org>
> Cc: Ramalingam C <ramalingam.c at intel.com>
> Signed-off-by: Anshuman Gupta <anshuman.gupta at intel.com>
> ---
>  drivers/gpu/drm/i915/display/intel_hdcp.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_hdcp.c b/drivers/gpu/drm/i915/display/intel_hdcp.c
> index eee8263405b9..b9d8825e2bb1 100644
> --- a/drivers/gpu/drm/i915/display/intel_hdcp.c
> +++ b/drivers/gpu/drm/i915/display/intel_hdcp.c
> @@ -2210,6 +2210,7 @@ void intel_hdcp_update_pipe(struct intel_atomic_state *state,
>  	if (content_protection_type_changed) {
>  		mutex_lock(&hdcp->mutex);
>  		hdcp->value = DRM_MODE_CONTENT_PROTECTION_DESIRED;
> +		drm_connector_get(&connector->base);
haa... just commented about missing of this get ref in previous patch.
ignore it.

Reviewed-by: Ramalingam C <ramalingam.c at intel.com>

-Ram
>  		schedule_work(&hdcp->prop_work);
>  		mutex_unlock(&hdcp->mutex);
>  	}
> -- 
> 2.26.2
>