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[SCSI] drivers/base/bus.c - export reprobe

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Adding support for exposing hidden raid components for sg
interface. The sdev->no_uld_attach flag will set set accordingly.

The sas module supports adding/removing raid volumes using online
storage management application interface.

This patch was provided to me by Christoph Hellwig.

Signed-off-by: Eric Moore <Eric.Moore@lsil.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
Moore, Eric 2006-03-14 09:18:18 -07:00 committed by James Bottomley
parent 79cb1819e2
commit e935d5da8e
2 changed files with 23 additions and 0 deletions
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22
drivers/base/bus.c
View file

@ -536,6 +536,28 @@ void bus_rescan_devices(struct bus_type * bus)
bus_for_each_dev(bus, NULL, NULL, bus_rescan_devices_helper);
}
/**
* device_reprobe - remove driver for a device and probe for a new driver
* @dev: the device to reprobe
*
* This function detaches the attached driver (if any) for the given
* device and restarts the driver probing process. It is intended
* to use if probing criteria changed during a devices lifetime and
* driver attachment should change accordingly.
*/
void device_reprobe(struct device *dev)
{
if (dev->driver) {
if (dev->parent) /* Needed for USB */
down(&dev->parent->sem);
device_release_driver(dev);
if (dev->parent)
up(&dev->parent->sem);
}
bus_rescan_devices_helper(dev, NULL);
}
EXPORT_SYMBOL_GPL(device_reprobe);
struct bus_type * get_bus(struct bus_type * bus)
{

1
include/linux/device.h
View file

@ -378,6 +378,7 @@ extern void device_bind_driver(struct device * dev);
extern void device_release_driver(struct device * dev);
extern int device_attach(struct device * dev);
extern void driver_attach(struct device_driver * drv);
extern void device_reprobe(struct device *dev);
/*