There's insufficient logging when device links or fw_devlink (waiting to create device links) cause probe deferrals. This makes it hard to debug devices not getting probed. So, add debug logs to make it easy to debug.
Signed-off-by: Saravana Kannan <[email protected]> --- drivers/base/core.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/base/core.c b/drivers/base/core.c index 25e08e5f40bd..fe8601197b84 100644 --- a/drivers/base/core.c +++ b/drivers/base/core.c @@ -929,6 +929,10 @@ int device_links_check_suppliers(struct device *dev) mutex_lock(&fwnode_link_lock); if (dev->fwnode && !list_empty(&dev->fwnode->suppliers) && !fw_devlink_is_permissive()) { + dev_dbg(dev, "probe deferral - wait for supplier %pfwP\n", + list_first_entry(&dev->fwnode->suppliers, + struct fwnode_link, + c_hook)->supplier); mutex_unlock(&fwnode_link_lock); return -EPROBE_DEFER; } @@ -943,6 +947,8 @@ int device_links_check_suppliers(struct device *dev) if (link->status != DL_STATE_AVAILABLE && !(link->flags & DL_FLAG_SYNC_STATE_ONLY)) { device_links_missing_supplier(dev); + dev_dbg(dev, "probe deferral - supplier %s not ready\n", + dev_name(link->supplier)); ret = -EPROBE_DEFER; break; } -- 2.29.2.684.gfbc64c5ab5-goog
