@@ -787,12 +787,12 @@ static irqreturn_t ehci_irq (struct usb_hcd *hcd)
ehci->reset_done[i] == 0))
continue;
- /* start 20 msec resume signaling from this port,
- * and make khubd collect PORT_STAT_C_SUSPEND to
- * stop that signaling. Use 5 ms extra for safety,
- * like usb_port_resume() does.
+ /* start USB_RESUME_TIMEOUT msec resume signaling from
+ * this port, and make khubd collect
+ * PORT_STAT_C_SUSPEND to stop that signaling.
*/
- ehci->reset_done[i] = jiffies + msecs_to_jiffies(25);
+ ehci->reset_done[i] = jiffies +
+ msecs_to_jiffies(USB_RESUME_TIMEOUT);
set_bit(i, &ehci->resuming_ports);
ehci_dbg (ehci, "port %d remote wakeup\n", i + 1);
usb_hcd_start_port_resume(&hcd->self, i);
@@ -473,10 +473,13 @@ static int ehci_bus_resume (struct usb_hcd *hcd)
ehci_writel(ehci, temp, &ehci->regs->port_status [i]);
}
- /* msleep for 20ms only if code is trying to resume port */
+ /*
+ * msleep for USB_RESUME_TIMEOUT ms only if code is trying to resume
+ * port
+ */
if (resume_needed) {
spin_unlock_irq(&ehci->lock);
- msleep(20);
+ msleep(USB_RESUME_TIMEOUT);
spin_lock_irq(&ehci->lock);
if (ehci->shutdown)
goto shutdown;
@@ -944,7 +947,7 @@ int ehci_hub_control(
temp &= ~PORT_WAKE_BITS;
ehci_writel(ehci, temp | PORT_RESUME, status_reg);
ehci->reset_done[wIndex] = jiffies
- + msecs_to_jiffies(20);
+ + msecs_to_jiffies(USB_RESUME_TIMEOUT);
set_bit(wIndex, &ehci->resuming_ports);
usb_hcd_start_port_resume(&hcd->self, wIndex);
break;
This is a note to let you know that I have just added a patch titled usb: host: ehci: use new USB_RESUME_TIMEOUT to the linux-3.16.y-queue branch of the 3.16.y-ckt extended stable tree which can be found at: http://kernel.ubuntu.com/git/ubuntu/linux.git/log/?h=linux-3.16.y-queue This patch is scheduled to be released in version 3.16.7-ckt11. If you, or anyone else, feels it should not be added to this tree, please reply to this email. For more information about the 3.16.y-ckt tree, see https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable Thanks. -Luis ------ From 211f3861dec95761f9e5a206589b1b651837efbe Mon Sep 17 00:00:00 2001 From: Felipe Balbi <balbi@ti.com> Date: Fri, 13 Feb 2015 14:42:25 -0600 Subject: usb: host: ehci: use new USB_RESUME_TIMEOUT commit ea16328f80ca8d74434352157f37ef60e2f55ce2 upstream. Make sure we're using the new macro, so our resume signaling will always pass certification. Signed-off-by: Felipe Balbi <balbi@ti.com> [ luis: backported to 3.16: - replaced 'hub_wq' by 'khubd' in comment ] Signed-off-by: Luis Henriques <luis.henriques@canonical.com> --- drivers/usb/host/ehci-hcd.c | 10 +++++----- drivers/usb/host/ehci-hub.c | 9 ++++++--- 2 files changed, 11 insertions(+), 8 deletions(-)