On 05/23/2015 10:00 PM, Donald Harter wrote:
May 23 08:52:05 pc_u kernel: [53875.075976] xhci_hcd 0000:00:14.0:
Port Status Change Event for port 3
May 23 08:52:05 pc_u kernel: [53875.075979] xhci_hcd 0000:00:14.0:
port resume event for port 3
May 23 08:52:05 pc_u kernel: [53875.075981] xhci_hcd 0000:00:14.0:
resume HS port 3
May 23 08:52:05 pc_u kernel: [53875.075983] xhci_hcd 0000:00:14.0:
handle_port_status: starting port polling.
May 23 08:52:05 pc_u kernel: [53875.135221] xhci_hcd 0000:00:14.0:
Resume USB2 port 3
May 23 08:52:05 pc_u kernel: [53875.135230] xhci_hcd 0000:00:14.0:
Port Status Change Event for port 3
May 23 08:52:05 pc_u kernel: [53875.135240] xhci_hcd 0000:00:14.0: get
port status, actual port 2 status = 0xfe3
May 23 08:52:05 pc_u kernel: [53875.135241] xhci_hcd 0000:00:14.0: Get
port status returned 0x40503
May 23 08:52:05 pc_u kernel: [53875.135262] xhci_hcd 0000:00:14.0:
clear port suspend/resume change, actual port 2 status = 0xe03
May 23 08:52:05 pc_u kernel: [53875.151222] xhci_hcd 0000:00:14.0: get
port status, actual port 2 status = 0xe03
May 23 08:52:05 pc_u kernel: [53875.151224] xhci_hcd 0000:00:14.0: Get
port status returned 0x503
May 23 08:52:05 pc_u kernel: [53875.255453] xhci_hcd 0000:00:14.0: //
Ding dong!
May 23 08:52:05 pc_u kernel: [53875.255496] xhci_hcd 0000:00:14.0:
Slot 15 output ctx = 0x4018f1000 (dma)
May 23 08:52:05 pc_u kernel: [53875.255498] xhci_hcd 0000:00:14.0:
Slot 15 input ctx = 0x401e2a000 (dma)
May 23 08:52:05 pc_u kernel: [53875.255499] xhci_hcd 0000:00:14.0: Set
slot id 15 dcbaa entry ffff8804028f2078 to 0x4018f1000
May 23 08:52:06 pc_u kernel: [53875.343311] usb 3-3.4: new high-speed
USB device number 14 using xhci_hcd
May 23 08:52:06 pc_u kernel: [53875.343314] xhci_hcd 0000:00:14.0: Set
root hub portnum to 3
May 23 08:52:06 pc_u kernel: [53875.343315] xhci_hcd 0000:00:14.0: Set
fake root hub portnum to 3
May 23 08:52:06 pc_u kernel: [53875.343315] xhci_hcd 0000:00:14.0:
udev->tt = (null)
May 23 08:52:06 pc_u kernel: [53875.343316] xhci_hcd 0000:00:14.0:
udev->ttport = 0x0
May 23 08:52:06 pc_u kernel: [53875.343317] xhci_hcd 0000:00:14.0:
Slot ID 15 Input Context:
It looks like USB device doesn't complete resuming while host controller
tries
to assign USB address to it.
Do you mind trying below change?
diff --git a/include/linux/usb.h b/include/linux/usb.h
index 447fe29..660e2d7 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -229,7 +229,7 @@ void usb_put_intf(struct usb_interface *intf);
* should cope with both LPJ calibration errors and devices not
following every
* detail of the USB Specification.
*/
-#define USB_RESUME_TIMEOUT 40 /* ms */
+#define USB_RESUME_TIMEOUT 100 /* ms */
/**
* struct usb_interface_cache - long-term representation of a device
interface
Thanks,
-Baolu
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