diff options
Diffstat (limited to 'drivers/base/class.c')
| -rw-r--r-- | drivers/base/class.c | 22 |
1 files changed, 13 insertions, 9 deletions
diff --git a/drivers/base/class.c b/drivers/base/class.c index 2eb7048003a..3918d0e432d 100644 --- a/drivers/base/class.c +++ b/drivers/base/class.c @@ -302,6 +302,7 @@ EXPORT_SYMBOL_GPL(class_for_each_device); /** * class_find_device - device iterator for locating a particular device * @class: the class we're iterating + * @start: Device to begin with * @data: data for the match function * @match: function to check device * @@ -319,8 +320,9 @@ EXPORT_SYMBOL_GPL(class_for_each_device); * re-acquired in @match, otherwise it will self-deadlocking. For * example, calls to add or remove class members would be verboten. */ -struct device *class_find_device(struct class *class, void *data, - int (*match)(struct device *, void *)) +struct device *class_find_device(struct class *class, struct device *start, + void *data, + int (*match)(struct device *, void *)) { struct device *dev; int found = 0; @@ -330,15 +332,17 @@ struct device *class_find_device(struct class *class, void *data, down(&class->sem); list_for_each_entry(dev, &class->devices, node) { + if (start) { + if (start == dev) + start = NULL; + continue; + } dev = get_device(dev); - if (dev) { - if (match(dev, data)) { - found = 1; - break; - } else - put_device(dev); - } else + if (match(dev, data)) { + found = 1; break; + } else + put_device(dev); } up(&class->sem); |