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authorMoore, Eric <Eric.Moore@lsil.com>2006-03-14 11:18:18 -0500
committerJames Bottomley <jejb@mulgrave.il.steeleye.com>2006-03-14 13:50:44 -0500
commite935d5da8e5d12fabe5b632736c50eae0427e8c8 (patch)
tree8045ffcaa659365ed1d844e7704b92810660c8b1 /drivers/base/bus.c
parent79cb1819e231f811211133a09a5382cb89d7ec67 (diff)
[SCSI] drivers/base/bus.c - export reprobe
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>
Diffstat (limited to 'drivers/base/bus.c')
-rw-r--r--drivers/base/bus.c22
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/base/bus.c b/drivers/base/bus.c
index c3141565d59d..48718b7f4fa0 100644
--- a/drivers/base/bus.c
+++ b/drivers/base/bus.c
@@ -536,6 +536,28 @@ void bus_rescan_devices(struct bus_type * bus)
536 bus_for_each_dev(bus, NULL, NULL, bus_rescan_devices_helper); 536 bus_for_each_dev(bus, NULL, NULL, bus_rescan_devices_helper);
537} 537}
538 538
539/**
540 * device_reprobe - remove driver for a device and probe for a new driver
541 * @dev: the device to reprobe
542 *
543 * This function detaches the attached driver (if any) for the given
544 * device and restarts the driver probing process. It is intended
545 * to use if probing criteria changed during a devices lifetime and
546 * driver attachment should change accordingly.
547 */
548void device_reprobe(struct device *dev)
549{
550 if (dev->driver) {
551 if (dev->parent) /* Needed for USB */
552 down(&dev->parent->sem);
553 device_release_driver(dev);
554 if (dev->parent)
555 up(&dev->parent->sem);
556 }
557
558 bus_rescan_devices_helper(dev, NULL);
559}
560EXPORT_SYMBOL_GPL(device_reprobe);
539 561
540struct bus_type * get_bus(struct bus_type * bus) 562struct bus_type * get_bus(struct bus_type * bus)
541{ 563{