disp: msm: sde: allow input fence status show only when kickoff in progress

Allow input fence status read only when crtc kickoff is in
progress to avoid race between status read and fence destroy.

Change-Id: I3402bfcb38940628f09f645a3cee31f821daeae9
Signed-off-by: Andhavarapu Karthik <[email protected]>

msm/sde/sde_crtc.c

@@ -6562,6 +6562,9 @@ static int _sde_debugfs_fence_status_show(struct seq_file *s, void *data)
 	dev = crtc->dev;
 	cstate = to_sde_crtc_state(crtc->state);
 
+	if (!sde_crtc->kickoff_in_progress)
+		goto skip_input_fence;
+
 	/* Dump input fence info */
 	seq_puts(s, "===Input fence===\n");
 	drm_atomic_crtc_for_each_plane(plane, crtc) {
@@ -6589,6 +6592,7 @@ static int _sde_debugfs_fence_status_show(struct seq_file *s, void *data)
 		}
 	}
 
+skip_input_fence:
 	/* Dump release fence info */
 	seq_puts(s, "\n");
 	seq_puts(s, "===Release fence===\n");