Messages in this thread Patch in this message | | | Date | Fri, 29 Jul 2005 12:17:16 -0700 | From | Greg KH <> | Subject | [patch 22/29] USB: Usbcore: Don't try to delete unregistered interfaces |
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From: Alan Stern <stern@rowland.harvard.edu>
This patch handles a rarely-encountered failure mode in usbcore. It's legal for device_add to fail (although now it happens even more rarely than before since failure to bind a driver is no longer fatal). So when we destroy the interfaces in a configuration, we shouldn't try to delete ones which weren't successfully registered. Also, failure to register an interface shouldn't be fatal either -- I think; you may disagree about this part of the patch.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
--- drivers/usb/core/message.c | 6 ++++-- 1 files changed, 4 insertions(+), 2 deletions(-)
--- gregkh-2.6.orig/drivers/usb/core/message.c 2005-07-29 11:29:48.000000000 -0700 +++ gregkh-2.6/drivers/usb/core/message.c 2005-07-29 11:36:29.000000000 -0700 @@ -985,8 +985,10 @@ for (i = 0; i < dev->actconfig->desc.bNumInterfaces; i++) { struct usb_interface *interface; - /* remove this interface */ + /* remove this interface if it has been registered */ interface = dev->actconfig->interface[i]; + if (!klist_node_attached(&interface->dev.knode_bus)) + continue; dev_dbg (&dev->dev, "unregistering interface %s\n", interface->dev.bus_id); usb_remove_sysfs_intf_files(interface); @@ -1439,7 +1441,7 @@ } } - return ret; + return 0; } // synchronous request completion model -- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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