| Message ID | 20200403200757.886443-2-lyude@redhat.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | drm/dp_mst: drm_dp_check_act_status() fixes | expand |
On Fri, Apr 3, 2020 at 4:08 PM Lyude Paul <lyude@redhat.com> wrote: > > No functional changes. > > Signed-off-by: Lyude Paul <lyude@redhat.com> > Cc: Sean Paul <sean@poorly.run> Reviewed-by: Sean Paul <sean@poorly.run> > --- > drivers/gpu/drm/drm_dp_mst_topology.c | 8 ++++++-- > 1 file changed, 6 insertions(+), 2 deletions(-) > > diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c > index 10d0315af513..2b9ce965f044 100644 > --- a/drivers/gpu/drm/drm_dp_mst_topology.c > +++ b/drivers/gpu/drm/drm_dp_mst_topology.c > @@ -4462,10 +4462,14 @@ static int drm_dp_dpcd_write_payload(struct drm_dp_mst_topology_mgr *mgr, > > > /** > - * drm_dp_check_act_status() - Check ACT handled status. > + * drm_dp_check_act_status() - Polls for ACT handled status. > * @mgr: manager to use > * > - * Check the payload status bits in the DPCD for ACT handled completion. > + * Tries waiting for the MST hub to finish updating it's payload table by > + * polling for the ACT handled bit. > + * > + * Returns: > + * 0 if the ACT was handled in time, negative error code on failure. > */ > int drm_dp_check_act_status(struct drm_dp_mst_topology_mgr *mgr) > { > -- > 2.25.1 >
diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c index 10d0315af513..2b9ce965f044 100644 --- a/drivers/gpu/drm/drm_dp_mst_topology.c +++ b/drivers/gpu/drm/drm_dp_mst_topology.c @@ -4462,10 +4462,14 @@ static int drm_dp_dpcd_write_payload(struct drm_dp_mst_topology_mgr *mgr, /** - * drm_dp_check_act_status() - Check ACT handled status. + * drm_dp_check_act_status() - Polls for ACT handled status. * @mgr: manager to use * - * Check the payload status bits in the DPCD for ACT handled completion. + * Tries waiting for the MST hub to finish updating it's payload table by + * polling for the ACT handled bit. + * + * Returns: + * 0 if the ACT was handled in time, negative error code on failure. */ int drm_dp_check_act_status(struct drm_dp_mst_topology_mgr *mgr) {
No functional changes. Signed-off-by: Lyude Paul <lyude@redhat.com> Cc: Sean Paul <sean@poorly.run> --- drivers/gpu/drm/drm_dp_mst_topology.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-)