staging: comedi: return void from comedi_driver_unregister()
'Unregister' functions generally return `void`. `comedi_driver_unregister()` currently returns an `int` errno value. Nothing looks at the return value. Change the return type to `void`. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -363,7 +363,7 @@ int comedi_auto_config(struct device *, struct comedi_driver *,
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void comedi_auto_unconfig(struct device *);
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int comedi_driver_register(struct comedi_driver *);
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int comedi_driver_unregister(struct comedi_driver *);
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void comedi_driver_unregister(struct comedi_driver *);
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/**
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* module_comedi_driver() - Helper macro for registering a comedi driver
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@ -559,7 +559,7 @@ int comedi_driver_register(struct comedi_driver *driver)
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}
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EXPORT_SYMBOL_GPL(comedi_driver_register);
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int comedi_driver_unregister(struct comedi_driver *driver)
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void comedi_driver_unregister(struct comedi_driver *driver)
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{
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struct comedi_driver *prev;
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int i;
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@ -584,15 +584,14 @@ int comedi_driver_unregister(struct comedi_driver *driver)
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if (comedi_drivers == driver) {
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comedi_drivers = driver->next;
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return 0;
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return;
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}
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for (prev = comedi_drivers; prev->next; prev = prev->next) {
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if (prev->next == driver) {
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prev->next = driver->next;
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return 0;
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return;
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}
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}
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return -EINVAL;
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}
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EXPORT_SYMBOL_GPL(comedi_driver_unregister);
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