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usbcore: trim down usb_bus structure

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As part of the ongoing program to flatten out the HCD bus-glue layer,
this patch (as771b) eliminates the hcpriv, release, and kref fields
from struct usb_bus.  hcpriv and release were not being used for
anything worthwhile, and kref has been moved into the enclosing
usb_hcd structure.

Along with those changes, the patch gets rid of usb_bus_get and
usb_bus_put, replacing them with usb_get_hcd and usb_put_hcd.

The one interesting aspect is that the dev_set_drvdata call was
removed from usb_put_hcd, where it clearly doesn't belong.  This means
the driver private data won't get reset to NULL.  It shouldn't cause
any problems, since the private data is undefined when no driver is
bound.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Alan Stern 2006-08-30 11:32:52 -04:00 • committed by Greg Kroah-Hartman
parent dd990f16a3
commit 1720058343
9 changed files with 44 additions and 74 deletions
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6
drivers/usb/mon/mon_main.c
View file

@ -265,7 +265,6 @@ static void mon_dissolve(struct mon_bus *mbus, struct usb_bus *ubus)
ubus->mon_bus = NULL;
mbus->u_bus = NULL;
mb();
// usb_bus_put(ubus);
}
/*
@ -297,10 +296,9 @@ static void mon_bus_init(struct dentry *mondir, struct usb_bus *ubus)
INIT_LIST_HEAD(&mbus->r_list);
/*
* This usb_bus_get here is superfluous, because we receive
* a notification if usb_bus is about to be removed.
* We don't need to take a reference to ubus, because we receive
* a notification if the bus is about to be removed.
*/
// usb_bus_get(ubus);
mbus->u_bus = ubus;
ubus->mon_bus = mbus;