1DEVICE_FIND_CHILD(9) Device drivers infrastructure DEVICE_FIND_CHILD(9)
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6 device_find_child - device iterator for locating a particular device.
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9 struct device * device_find_child(struct device * parent, void * data,
10 int (*match) (struct device *dev, void *data));
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13 parent
14 parent struct device
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16 data
17 Data to pass to match function
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19 match
20 Callback function to check device
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23 This is similar to the device_for_each_child function above, but it
24 returns a reference to a device that is 'found' for later use, as
25 determined by the match callback.
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27 The callback should return 0 if the device doesn't match and non-zero
28 if it does. If the callback returns non-zero and a reference to the
29 current device can be obtained, this function will return to the caller
30 and not iterate over any more devices.
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33Kernel Hackers Manual 2.6. November 2011 DEVICE_FIND_CHILD(9)