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USB: EHCI: add separate IAA watchdog timer

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This patch (as1028) was mostly written by David Brownell; I made only
a few changes (extra log info and a small bug fix -- which might
account for why David's version had to be reverted).  It adds a new
watchdog timer to the ehci-hcd driver to be used exclusively for
detecting lost or missing IAA notifications.

Previously a shared timer had been used, which may have led to some
problems as reported by Christian Hoffmann.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Alan Stern
2007-12-11 16:05:30 -05:00
committed by Greg Kroah-Hartman
parent 2e2eb83ffd
commit 07d29b63ef
6 changed files with 75 additions and 38 deletions
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2
drivers/usb/host/ehci-hub.c
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@@ -134,7 +134,7 @@ static int ehci_bus_suspend (struct usb_hcd *hcd)
}
ehci->command = ehci_readl(ehci, &ehci->regs->command);
if (ehci->reclaim)
ehci->reclaim_ready = 1;
end_unlink_async(ehci);
ehci_work(ehci);
/* Unlike other USB host controller types, EHCI doesn't have