mirror of https://gitee.com/openkylin/linux.git
[PATCH] driver core: change bus_rescan_devices to return void
No one was looking at the return value of bus_rescan_devices, and it really wasn't anything that anyone in the kernel would ever care about. So change it which enabled some counting code to be removed also. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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@ -483,31 +483,22 @@ void bus_remove_driver(struct device_driver * drv)
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/* Helper for bus_rescan_devices's iter */
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static int bus_rescan_devices_helper(struct device *dev, void *data)
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{
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int *count = data;
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if (!dev->driver && (device_attach(dev) > 0))
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(*count)++;
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if (!dev->driver)
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device_attach(dev);
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return 0;
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}
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/**
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* bus_rescan_devices - rescan devices on the bus for possible drivers
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* @bus: the bus to scan.
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* bus_rescan_devices - rescan devices on the bus for possible drivers
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* @bus: the bus to scan.
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*
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* This function will look for devices on the bus with no driver
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* attached and rescan it against existing drivers to see if it
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* matches any. Calls device_attach(). Returns the number of devices
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* that were sucessfully bound to a driver.
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* This function will look for devices on the bus with no driver
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* attached and rescan it against existing drivers to see if it matches
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* any by calling device_attach() for the unbound devices.
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*/
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int bus_rescan_devices(struct bus_type * bus)
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void bus_rescan_devices(struct bus_type * bus)
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{
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int count = 0;
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bus_for_each_dev(bus, NULL, &count, bus_rescan_devices_helper);
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return count;
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bus_for_each_dev(bus, NULL, NULL, bus_rescan_devices_helper);
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}
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@ -69,7 +69,7 @@ struct bus_type {
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extern int bus_register(struct bus_type * bus);
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extern void bus_unregister(struct bus_type * bus);
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extern int bus_rescan_devices(struct bus_type * bus);
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extern void bus_rescan_devices(struct bus_type * bus);
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extern struct bus_type * get_bus(struct bus_type * bus);
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extern void put_bus(struct bus_type * bus);
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