From: Anshuman Gupta anshuman.gupta@intel.com
commit 8662e1119a7d1baa1b2001689b2923e9050754bd upstream.
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@chromium.org Cc: Ramalingam C ramalingam.c@intel.com Reviewed-by: Uma Shankar uma.shankar@intel.com Reviewed-by: Ramalingam C ramalingam.c@intel.com Tested-by: Karthik B S karthik.b.s@intel.com Signed-off-by: Anshuman Gupta anshuman.gupta@intel.com Link: https://patchwork.freedesktop.org/patch/msgid/20210111081120.28417-3-anshuma... (cherry picked from commit b3c6661aad979ec3d4f5675cf3e6a35828607d6a) Signed-off-by: Jani Nikula jani.nikula@intel.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/gpu/drm/i915/display/intel_hdcp.c | 1 + 1 file changed, 1 insertion(+)
--- a/drivers/gpu/drm/i915/display/intel_hdcp.c +++ b/drivers/gpu/drm/i915/display/intel_hdcp.c @@ -2187,6 +2187,7 @@ void intel_hdcp_update_pipe(struct intel if (content_protection_type_changed) { mutex_lock(&hdcp->mutex); hdcp->value = DRM_MODE_CONTENT_PROTECTION_DESIRED; + drm_connector_get(&connector->base); schedule_work(&hdcp->prop_work); mutex_unlock(&hdcp->mutex); }