diff options
Diffstat (limited to 'drivers/base/dd.c')
| -rw-r--r-- | drivers/base/dd.c | 26 |
1 files changed, 18 insertions, 8 deletions
diff --git a/drivers/base/dd.c b/drivers/base/dd.c index e2cf3b29123e..33fda3462aa0 100644 --- a/drivers/base/dd.c +++ b/drivers/base/dd.c @@ -55,7 +55,6 @@ static DEFINE_MUTEX(deferred_probe_mutex); static LIST_HEAD(deferred_probe_pending_list); static LIST_HEAD(deferred_probe_active_list); static atomic_t deferred_trigger_count = ATOMIC_INIT(0); -static struct dentry *deferred_devices; static bool initcalls_done; /* Save the async probe drivers' name from kernel cmdline */ @@ -126,6 +125,9 @@ static DECLARE_WORK(deferred_probe_work, deferred_probe_work_func); void driver_deferred_probe_add(struct device *dev) { + if (!dev->can_match) + return; + mutex_lock(&deferred_probe_mutex); if (list_empty(&dev->p->deferred_probe)) { dev_dbg(dev, "Added to deferred list\n"); @@ -185,7 +187,7 @@ static void driver_deferred_probe_trigger(void) * Kick the re-probe thread. It may already be scheduled, but it is * safe to kick it again. */ - schedule_work(&deferred_probe_work); + queue_work(system_unbound_wq, &deferred_probe_work); } /** @@ -313,8 +315,8 @@ static DECLARE_DELAYED_WORK(deferred_probe_timeout_work, deferred_probe_timeout_ */ static int deferred_probe_initcall(void) { - deferred_devices = debugfs_create_file("devices_deferred", 0444, NULL, - NULL, &deferred_devs_fops); + debugfs_create_file("devices_deferred", 0444, NULL, NULL, + &deferred_devs_fops); driver_deferred_probe_enable = true; driver_deferred_probe_trigger(); @@ -339,7 +341,7 @@ late_initcall(deferred_probe_initcall); static void __exit deferred_probe_exit(void) { - debugfs_remove_recursive(deferred_devices); + debugfs_remove_recursive(debugfs_lookup("devices_deferred", NULL)); } __exitcall(deferred_probe_exit); @@ -416,8 +418,11 @@ static int driver_sysfs_add(struct device *dev) if (ret) goto rm_dev; - if (!IS_ENABLED(CONFIG_DEV_COREDUMP) || !dev->driver->coredump || - !device_create_file(dev, &dev_attr_coredump)) + if (!IS_ENABLED(CONFIG_DEV_COREDUMP) || !dev->driver->coredump) + return 0; + + ret = device_create_file(dev, &dev_attr_coredump); + if (!ret) return 0; sysfs_remove_link(&dev->kobj, "driver"); @@ -460,8 +465,10 @@ int device_bind_driver(struct device *dev) int ret; ret = driver_sysfs_add(dev); - if (!ret) + if (!ret) { + device_links_force_bind(dev); driver_bound(dev); + } else if (dev->bus) blocking_notifier_call_chain(&dev->bus->p->bus_notifier, BUS_NOTIFY_DRIVER_NOT_BOUND, dev); @@ -729,6 +736,7 @@ static int driver_probe_device(struct device_driver *drv, struct device *dev) if (!device_is_registered(dev)) return -ENODEV; + dev->can_match = true; pr_debug("bus: '%s': %s: matched device %s with driver %s\n", drv->bus->name, __func__, dev_name(dev), drv->name); @@ -832,6 +840,7 @@ static int __device_attach_driver(struct device_driver *drv, void *_data) return 0; } else if (ret == -EPROBE_DEFER) { dev_dbg(dev, "Device match requests probe deferral\n"); + dev->can_match = true; driver_deferred_probe_add(dev); } else if (ret < 0) { dev_dbg(dev, "Bus failed to match device: %d\n", ret); @@ -1067,6 +1076,7 @@ static int __driver_attach(struct device *dev, void *data) return 0; } else if (ret == -EPROBE_DEFER) { dev_dbg(dev, "Device match requests probe deferral\n"); + dev->can_match = true; driver_deferred_probe_add(dev); } else if (ret < 0) { dev_dbg(dev, "Bus failed to match device: %d\n", ret); |