https://github.com/torvalds/linux
Revision 61e8b858abe38c1042135065c59f7d339194b50b authored by Alan Stern on 09 April 2007, 15:52:31 UTC, committed by Greg Kroah-Hartman on 11 April 2007, 17:44:15 UTC
There is one significant difference between the behavior of root hubs
(as embodied in host controller hardware) and external hubs: When a
remote-wakeup signal is received, an external hub sends an interrupt
message at the _end_ of the resume sequence but a root hub generates
and interrupt at the _beginning_ of the resume sequence.  The host
system must poll for the end of the sequence.

When ehci-hcd was converted to interrupt-driven operation instead of
using polling, the remaining need for this particular poll was
overlooked.  This patch (as894) fixes the problem.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 parent 5ab7ffe
History
Tip revision: 61e8b858abe38c1042135065c59f7d339194b50b authored by Alan Stern on 09 April 2007, 15:52:31 UTC
EHCI: fix remote wakeup regression in 2.6.21-rc
Tip revision: 61e8b85
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