Commit 61e8b858 authored by Alan Stern's avatar Alan Stern Committed by Greg Kroah-Hartman

EHCI: fix remote wakeup regression in 2.6.21-rc

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: default avatarAlan Stern <stern@rowland.harvard.edu>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 5ab7ffea
...@@ -669,6 +669,7 @@ static irqreturn_t ehci_irq (struct usb_hcd *hcd) ...@@ -669,6 +669,7 @@ static irqreturn_t ehci_irq (struct usb_hcd *hcd)
*/ */
ehci->reset_done [i] = jiffies + msecs_to_jiffies (20); ehci->reset_done [i] = jiffies + msecs_to_jiffies (20);
ehci_dbg (ehci, "port %d remote wakeup\n", i + 1); ehci_dbg (ehci, "port %d remote wakeup\n", i + 1);
mod_timer(&hcd->rh_timer, ehci->reset_done[i]);
} }
} }
......
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