From: Alan Stern Date: Mon, 9 Apr 2007 15:52:31 +0000 (-0400) Subject: EHCI: fix remote wakeup regression in 2.6.21-rc X-Git-Tag: v2.6.21-rc7~23^2~1 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=61e8b858abe38c1042135065c59f7d339194b50b;p=platform%2Fkernel%2Flinux-3.10.git 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: Alan Stern Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c index a740564..c7458f7 100644 --- a/drivers/usb/host/ehci-hcd.c +++ b/drivers/usb/host/ehci-hcd.c @@ -669,6 +669,7 @@ static irqreturn_t ehci_irq (struct usb_hcd *hcd) */ ehci->reset_done [i] = jiffies + msecs_to_jiffies (20); ehci_dbg (ehci, "port %d remote wakeup\n", i + 1); + mod_timer(&hcd->rh_timer, ehci->reset_done[i]); } }