[PARPORT] Patch(lx240test5pre2): Bugfix imm+ppa for PCI parallel port

From: Gunther Mayer (gunther.mayer@okersurf.de)
Date: Thu Jul 20 2000 - 16:58:34 EDT

  • Next message: Tim Waugh: "Re: [PARPORT] Patch(lx240test5pre2): Bugfix imm+ppa for PCI parallel port"

    with PCI parallel ports, imm and ppa will corrupt other PCI devices,
    when trying to access ECP register at offset 0x402 !
    Note: Even reads can habe side-effects (e.g. auto increment).

    This patch:
    - fixes the aforementioned bug
    - fixes fifo drain only when in ecp fifo mode
    - identifies io port on establishing communication (imm)

    Regards, Gunther

    Luckily my USB could stand these accesses :-)
    d000-d007 : PCI device 1409:7268 (Timedia Technology Co Ltd)
      d000-d002 : parport1
    d400-d41f : Intel Corporation 82371AB PIIX4 USB
      d400-d41f : usb-uhci

    -- To unsubscribe, send mail to: linux-parport-request@torque.net --
    -- with the single word "unsubscribe" in the body of the message. --

    This archive was generated by hypermail 2b29 : Fri Jul 21 2000 - 06:52:41 EDT