diff options
Diffstat (limited to 'drivers/base/dd.c')
| -rw-r--r-- | drivers/base/dd.c | 19 |
1 files changed, 14 insertions, 5 deletions
diff --git a/drivers/base/dd.c b/drivers/base/dd.c index 11b0fb6414d3..4a55fbb7e0da 100644 --- a/drivers/base/dd.c +++ b/drivers/base/dd.c @@ -172,7 +172,7 @@ static bool driver_deferred_probe_enable; * changes in the midst of a probe, then deferred processing should be triggered * again. */ -static void driver_deferred_probe_trigger(void) +void driver_deferred_probe_trigger(void) { if (!driver_deferred_probe_enable) return; @@ -580,7 +580,7 @@ static int really_probe(struct device *dev, struct device_driver *drv) { bool test_remove = IS_ENABLED(CONFIG_DEBUG_TEST_DRIVER_REMOVE) && !drv->suppress_bind_attrs; - int ret; + int ret, link_ret; if (defer_all_probes) { /* @@ -592,9 +592,9 @@ static int really_probe(struct device *dev, struct device_driver *drv) return -EPROBE_DEFER; } - ret = device_links_check_suppliers(dev); - if (ret) - return ret; + link_ret = device_links_check_suppliers(dev); + if (link_ret == -EPROBE_DEFER) + return link_ret; pr_debug("bus: '%s': %s: probing driver %s with device %s\n", drv->bus->name, __func__, drv->name, dev_name(dev)); @@ -634,6 +634,15 @@ re_probe: ret = call_driver_probe(dev, drv); if (ret) { /* + * If fw_devlink_best_effort is active (denoted by -EAGAIN), the + * device might actually probe properly once some of its missing + * suppliers have probed. So, treat this as if the driver + * returned -EPROBE_DEFER. + */ + if (link_ret == -EAGAIN) + ret = -EPROBE_DEFER; + + /* * Return probe errors as positive values so that the callers * can distinguish them from other errors. */ |