output: early return on wlopm if requested state is already set

This prevents a unnecessary output commit without buffer,
showing up as black flash when repeatedly calling wlopm --on.

diff --git a/src/output.c b/src/output.c
index 8a5b5825619be4de63ab3ad2091f3c70c9fb8740..2d805b10a446216dbcf5ccb420827e41a63c1767 100644 (file)
--- a/src/output.c
+++ b/src/output.c
@@ -1068,10 +1068,16 @@ handle_output_power_manager_set_mode(struct wl_listener *listener, void *data)
 
        switch (event->mode) {
        case ZWLR_OUTPUT_POWER_V1_MODE_OFF:
+               if (!event->output->enabled) {
+                       return;
+               }
                wlr_output_state_set_enabled(&output->pending, false);
                output_state_commit(output);
                break;
        case ZWLR_OUTPUT_POWER_V1_MODE_ON:
+               if (event->output->enabled) {
+                       return;
+               }
                wlr_output_state_set_enabled(&output->pending, true);
                if (!event->output->current_mode) {
                        /*