#3579 BLOC Untriag: Wireless hang after setconfig

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#3579: Wireless hang after setconfig
---------------------+------------------------------------------------------
 Reporter:  cjb      |       Owner:  marcelo  
     Type:  defect   |      Status:  new      
 Priority:  blocker  |   Milestone:  Untriaged
Component:  kernel   |     Version:           
 Keywords:           |    Verified:  0        
---------------------+------------------------------------------------------
 This is a new hang, I think:

 {{{
 [    2.922376] usb_reset_device!
 [    2.994970] hub_port_wait_reset: portstatus=503 portchange=10
 [    3.074388] usb 1-1: reset high speed USB device using ehci_hcd and
 address 2
 [    3.154564] hub_port_wait_reset: portstatus=503 portchange=10
 [    2.207651] USB_REQ_SET_CONFIGURATION!
 [    2.241378] PM: Removing info for No Bus:usbdev1.2_ep02
 [    2.275937] PM: Removing info for No Bus:usbdev1.2_ep83
 [    2.310245] PM: Adding info for No Bus:usbdev1.2_ep02
 [    2.343268] PM: Adding info for No Bus:usbdev1.2_ep83
 (hang)
 }}}

 The next line *should* be "usb8xxx 1-1:1.0: resuming", but it never
 appears.  Javier says the state of the firmware looks fine:

 {{{
 == Beacon Analysis ==
 dbg3:800001b8=00000000,40
         - 0x00000000 => No endpoint buffers are ready.
         - 0x40 => USB_ERROR_EP2_STATUS_IDLE_TX, host was gated due to
           temporary lack of transmission buffers.  Recovered OK

 dbg1:12346663455666666789
         - Previous resume sequence went through all the right phases
         - This trace if reset when host_sleep_activate is received.

 dbg2:2064120
 dbg2:2064120
 dbg2:2064120
 dbg2:2064120
         - No USB interrupts.  We are suspended.

 dbg3:800001c0=00800080,40
         - Endpoint 0 enabled for send and receive.

 dbg3:800001c8=00000088,40
         - Endpoint 2 enabled for receive.

 dbg3:800001cc=00880000,40
         - Endpoint 3 enabled for send.

 dbg3:80000184=08000205,40
         - USB port attached, enabled, high-speed.

 dbg3:80000144=00000080,40
         - SOF received.
 }}}

 Marcelo, any idea where in the kernel we might be hung?

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Ticket URL: <https://dev.laptop.org/ticket/3579>
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