tree 9516fdc8ef8bc67bf6a51a1e4940d3ae59008dfa
parent 65d76f368295973a35d195c9b13053502a67b6bc
author David Vrabel <david.vrabel@csr.com> 1227623020 +0000
committer David Vrabel <david.vrabel@csr.com> 1227623020 +0000

wusb: whci-hcd shouldn't do ASL/PZL updates while channel is inactive

ASL/PZL updates while the WUSB channel is inactive (i.e., the PZL and
ASL are stopped) may not complete.  This causes hangs when removing the
whci-hcd module if a device is still connected (removing the device
does an endpoint_disable which results in an ASL update to remove the
qset).

If the WUSB channel is inactive the update can simply be skipped as the
WHC doesn't care about the state of the ASL/PZL.

Signed-off-by: David Vrabel <david.vrabel@csr.com>