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authorAlan Stern <stern@rowland.harvard.edu>2005-10-13 17:00:24 -0400
committerGreg Kroah-Hartman <gregkh@suse.de>2005-10-28 16:47:44 -0700
commitb81d34363c0b17c47f4ef63d5888c4f47f315d29 (patch)
treeaf4151e7d296da8f9e9a493ed81c5513f2454618 /Documentation/input
parent0c0382e32d46f606951010b202382be14d180a17 (diff)
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[PATCH] UHCI: Improve handling of iso TDs
The uhci-hcd driver is fairly lax about the way it handles isochronous transfers. This patch (as579) improves it in three respects: TDs for a new URB aren't added to the schedule until all of them have been allocated. This way there's no risk of the controller executing some of them when an allocation fails. TDs for an unlinked URB are removed from the schedule as soon as the URB is unlinked, rather than waiting until the URB is given back. This way there's no risk of the controller still executing a TD after the URB completes. The urb->error_count values are now reported correctly. Although since they aren't used in any drivers except for debug messages in the system log, probably nobody cares. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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