driver core: Emit reason for pending deferred probe

Ending a boot log with

	platform 3f202000.mmc: deferred probe pending

is already a nice hint about the problem. Sometimes there is a more
detailed error indicator available, add that to the output.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20231122093332.274145-2-u.kleine-koenig@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/base/dd.c b/drivers/base/dd.c
index 0c3725c3eefa46d80140f5278f65405262731745..85152537dbf12d005236cf18c721c51f62a5ebd8 100644 (file)
--- a/drivers/base/dd.c
+++ b/drivers/base/dd.c
@@ -313,7 +313,7 @@ static void deferred_probe_timeout_work_func(struct work_struct *work)
 
        mutex_lock(&deferred_probe_mutex);
        list_for_each_entry(p, &deferred_probe_pending_list, deferred_probe)
-               dev_info(p->device, "deferred probe pending\n");
+               dev_info(p->device, "deferred probe pending: %s", p->deferred_probe_reason ?: "(reason unknown)\n");
        mutex_unlock(&deferred_probe_mutex);
 
        fw_devlink_probing_done();