diff options
| -rw-r--r-- | drivers/base/dd.c | 72 |
1 files changed, 39 insertions, 33 deletions
diff --git a/drivers/base/dd.c b/drivers/base/dd.c index 47cbb56..85042ad 100644 --- a/drivers/base/dd.c +++ b/drivers/base/dd.c @@ -82,6 +82,28 @@ int driver_probe_device(struct device_driver * drv, struct device * dev) return 0; } +static int __device_attach(struct device_driver * drv, void * data) +{ + struct device * dev = data; + int error; + + error = driver_probe_device(drv, dev); + + if (error == -ENODEV && error == -ENXIO) { + /* Driver matched, but didn't support device + * or device not found. + * Not an error; keep going. + */ + error = 0; + } else { + /* driver matched but the probe failed */ + printk(KERN_WARNING + "%s: probe of %s failed with error %d\n", + drv->name, dev->bus_id, error); + } + return 0; +} + /** * device_attach - try to attach device to a driver. * @dev: device. @@ -92,30 +114,31 @@ int driver_probe_device(struct device_driver * drv, struct device * dev) */ int device_attach(struct device * dev) { - struct bus_type * bus = dev->bus; - struct list_head * entry; - int error; - if (dev->driver) { device_bind_driver(dev); return 1; } - if (bus->match) { - list_for_each(entry, &bus->drivers.list) { - struct device_driver * drv = to_drv(entry); - error = driver_probe_device(drv, dev); - if (!error) - /* success, driver matched */ - return 1; - if (error != -ENODEV && error != -ENXIO) + return bus_for_each_drv(dev->bus, NULL, dev, __device_attach); +} + +static int __driver_attach(struct device * dev, void * data) +{ + struct device_driver * drv = data; + int error = 0; + + if (!dev->driver) { + error = driver_probe_device(drv, dev); + if (error) { + if (error != -ENODEV) { /* driver matched but the probe failed */ printk(KERN_WARNING - "%s: probe of %s failed with error %d\n", - drv->name, dev->bus_id, error); + "%s: probe of %s failed with error %d\n", + drv->name, dev->bus_id, error); + } else + error = 0; } } - return 0; } @@ -133,24 +156,7 @@ int device_attach(struct device * dev) */ void driver_attach(struct device_driver * drv) { - struct bus_type * bus = drv->bus; - struct list_head * entry; - int error; - - if (!bus->match) - return; - - list_for_each(entry, &bus->devices.list) { - struct device * dev = container_of(entry, struct device, bus_list); - if (!dev->driver) { - error = driver_probe_device(drv, dev); - if (error && (error != -ENODEV)) - /* driver matched but the probe failed */ - printk(KERN_WARNING - "%s: probe of %s failed with error %d\n", - drv->name, dev->bus_id, error); - } - } + bus_for_each_dev(drv->bus, NULL, drv, __driver_attach); } /** |
