tree cfd1cf74b6e51623813be2ec65e42f3756598252
parent 9525dcb30f5f412748f58a0537002ea47cfe55de
author Alan Stern <stern@rowland.harvard.edu> 1244746582 -0400
committer Greg Kroah-Hartman <gregkh@suse.de> 1247436996 -0700

USB: EHCI: update toggle state for linked QHs

This is an update to the "usb-ehci-update-toggle-state-for-linked-qhs"
patch.  Since an HCD's endpoint_reset method can be called in
interrupt context, it mustn't assume that interrupts are enabled or
that it can sleep.

So we revert to the original way of refreshing QHs' toggle bits.  Now
the endpoint_reset method merely clears the toggle flag in the device
structure (as was done before) and starts an async QH unlink.  When the
QH is linked again, after the unlink finishes and an URB is queued,
the qh_refresh() routine will update the QH's toggle bit.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Tested-by: David <david@unsolicited.net>
CC: David Brownell <david-b@pacbell.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>