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USB: EHCI: fix remote-wakeup support for ARC/TDI core

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This patch (as1147) fixes the remote-wakeup support for EHCI
controllers using the ARC/TDI "embedded-TT" core.  These controllers
turn off the RESUME bit by themselves when a port resume is complete;
hence we need to keep separate track of which ports are suspended or
in the process of resuming.

The patch also makes a couple of small improvements in ehci_irq(),
replacing reads of the command register with the value already stored
in a local variable.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Tested-by: Thomas Reitmayr <treitmayr@devbase.at>
CC: David Brownell <david-b@pacbell.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Alan Stern
2008-10-06 11:25:53 -04:00
committed by Greg Kroah-Hartman
parent 2da41d5f6c
commit eafe5b99f2
3 changed files with 29 additions and 14 deletions
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2
drivers/usb/host/ehci.h
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@ -99,6 +99,8 @@ struct ehci_hcd { /* one per controller */
owned by the companion during a bus suspend */
unsigned long port_c_suspend; /* which ports have
the change-suspend feature turned on */
unsigned long suspended_ports; /* which ports are
suspended */
/* per-HC memory pools (could be per-bus, but ...) */
struct dma_pool *qh_pool; /* qh per active urb */