[PATCH 3.12 102/142] usb: host: ehci: use new USB_RESUME_TIMEOUT

Jiri Slaby
2015-05-16T08:06:09Z

From: Felipe Balbi <balbi@ti.com>

3.12-stable review patch. If anyone has any objections, please let me know.

===============

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>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
drivers/usb/host/ehci-hcd.c | 10 +++++-----
drivers/usb/host/ehci-hub.c | 9 ++++++---
2 files changed, 11 insertions(+), 8 deletions(-)

diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index 51b1f4e18c0d..9b27c65c7bb6 100644
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -791,12 +791,12 @@ 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 hub_wq 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);
diff --git a/drivers/usb/host/ehci-hub.c b/drivers/usb/host/ehci-hub.c
index 7ba861543d03..68a06b2f505a 100644
--- a/drivers/usb/host/ehci-hub.c
+++ b/drivers/usb/host/ehci-hub.c
@@ -482,10 +482,13 @@ 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;
@@ -953,7 +956,7 @@ static 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;
--
2.3.7