[Qemu-devel] [Bug 1478376] Re: PL050 KMIDATA register does not reset

[T-T Yu]

Yes. In our pl050 keyboard controller, the KMIDATA is reset once the
receive queue is empty.

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https://bugs.launchpad.net/bugs/1478376

Title:
  PL050 KMIDATA register does not reset

Status in QEMU:
  New

Bug description:
  static uint32_t pl050_read(void *opaque, target_phys_addr_t offset){
    ...
     case 2: /* KMIDATA */
          if (s->pending)
              s->last = ps2_read_data(s->dev);
          return s->last;
  }

  When the receive queue is empty (s->pending is false), is the KMIDATA
  register supposed to be reset to 0x00? In the current implementation,
  the  KMIDATA  does not reverse its value after interrupt is lowered.

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