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dwc_otg: root port and FIQ bugfixes #352

Merged
merged 3 commits into from
Aug 7, 2013
Merged

dwc_otg: root port and FIQ bugfixes #352

merged 3 commits into from
Aug 7, 2013

Commits on Aug 5, 2013

  1. dwc_otg: make fiq_split_enable imply fiq_fix_enable 

    Failing to set up the FIQ correctly would result in
"IRQ 32: nobody cared" errors in dmesg.
    P33M authored and P33M committed Aug 5, 2013
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  2. dwc_otg: prevent leaking URBs during enqueue 

    A dwc_otg_urb would get leaked if the HCD enqueue function
failed for any reason. Free the URB at the appropriate points.
    P33M authored and P33M committed Aug 5, 2013
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  3. dwc_otg: prevent crashes on host port disconnects 

    Fix several issues resulting in crashes or inconsistent state
if a Model A root port was disconnected.

- Clean up queue heads properly in kill_urbs_in_qh_list by
  removing the empty QHs from the schedule lists
- Set the halt status properly to prevent IRQ handlers from
  using freed memory
- Add fiq_split related cleanup for saved registers
- Make microframe scheduling reclaim host channels if
  active during a disconnect
- Abort URBs with -ESHUTDOWN status response, informing
  device drivers so they respond in a more correct fashion
  and don't try to resubmit URBs
- Prevent IRQ handlers from attempting to handle channel
  interrupts if the associated URB was dequeued (and the
  driver state was cleared)
    P33M authored and P33M committed Aug 5, 2013
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