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USB: EHCI: notify usbcore about port resumes 

This patch (as1650) adds calls to the new
usb_hcd_{start,end}_port_resume() functions to ehci-hcd.  Now EHCI
root hubs won't be runtime suspended while they are sending a resume
signal to one of their ports.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Tested-by: Ming Lei <ming.lei@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Alan Stern 2013-01-25 17:09:49 -05:00 committed by Greg Kroah-Hartman
parent da0aa7169b
commit f292e7f9fb
2 changed files with 4 additions and 0 deletions
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1
drivers/usb/host/ehci-hcd.c
View File

@ -797,6 +797,7 @@ static irqreturn_t ehci_irq (struct usb_hcd *hcd)
ehci->reset_done[i] = jiffies + msecs_to_jiffies(25);
set_bit(i, &ehci->resuming_ports);
ehci_dbg (ehci, "port %d remote wakeup\n", i + 1);
usb_hcd_start_port_resume(&hcd->self, i);
mod_timer(&hcd->rh_timer, ehci->reset_done[i]);
}
}

3
drivers/usb/host/ehci-hub.c
View File

@ -851,6 +851,7 @@ static int ehci_hub_control (
/* resume signaling for 20 msec */
ehci->reset_done[wIndex] = jiffies
+ msecs_to_jiffies(20);
usb_hcd_start_port_resume(&hcd->self, wIndex);
/* check the port again */
mod_timer(&ehci_to_hcd(ehci)->rh_timer,
ehci->reset_done[wIndex]);
@ -862,6 +863,7 @@ static int ehci_hub_control (
clear_bit(wIndex, &ehci->suspended_ports);
set_bit(wIndex, &ehci->port_c_suspend);
ehci->reset_done[wIndex] = 0;
usb_hcd_end_port_resume(&hcd->self, wIndex);
/* stop resume signaling */
temp = ehci_readl(ehci, status_reg);
@ -950,6 +952,7 @@ static int ehci_hub_control (
ehci->reset_done[wIndex] = 0;
if (temp & PORT_PE)
set_bit(wIndex, &ehci->port_c_suspend);
usb_hcd_end_port_resume(&hcd->self, wIndex);
}
if (temp & PORT_OC)