fsi: core: Add trace events for scan and unregister

Add more trace events for the scanning and unregistration
functions for debug purposes.

Signed-off-by: Eddie James <[e-mail]>
Reviewed-by: Joel Stanley <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Joel Stanley <[e-mail]>

drivers/fsi/fsi-core.c

···
 {
 	int link, rc;
 
+	trace_fsi_master_scan(master, true);
 	for (link = 0; link < master->n_links; link++) {
 		rc = fsi_master_link_enable(master, link);
 		if (rc) {
···
 
 static void fsi_master_unscan(struct fsi_master *master)
 {
+	trace_fsi_master_scan(master, false);
 	device_for_each_child(&master->dev, NULL, fsi_master_remove_slave);
 }
 
···
 
 void fsi_master_unregister(struct fsi_master *master)
 {
+	trace_fsi_master_unregister(master);
+
 	if (master->idx >= 0) {
 		ida_simple_remove(&master_ida, master->idx);
 		master->idx = -1;

include/trace/events/fsi.h

···
 	)
 );
 
+TRACE_EVENT(fsi_master_scan,
+	TP_PROTO(const struct fsi_master *master, bool scan),
+	TP_ARGS(master, scan),
+	TP_STRUCT__entry(
+		__field(int,	master_idx)
+		__field(int,	n_links)
+		__field(bool,	scan)
+	),
+	TP_fast_assign(
+		__entry->master_idx = master->idx;
+		__entry->n_links = master->n_links;
+		__entry->scan = scan;
+	),
+	TP_printk("fsi%d (%d links) %s", __entry->master_idx, __entry->n_links,
+		  __entry->scan ? "scan" : "unscan")
+);
+
+TRACE_EVENT(fsi_master_unregister,
+	TP_PROTO(const struct fsi_master *master),
+	TP_ARGS(master),
+	TP_STRUCT__entry(
+		__field(int,	master_idx)
+		__field(int,	n_links)
+	),
+	TP_fast_assign(
+		__entry->master_idx = master->idx;
+		__entry->n_links = master->n_links;
+	),
+	TP_printk("fsi%d (%d links)", __entry->master_idx, __entry->n_links)
+);
+
 TRACE_EVENT(fsi_slave_init,
 	TP_PROTO(const struct fsi_slave *slave),
 	TP_ARGS(slave),