Re: [PARPORT] parport_pc_epp_write broken?

From: Tim Waugh (
Date: Wed Aug 14 2002 - 04:00:49 EDT

  • Next message: VOLTZ Stéphane: "Re: [PARPORT] parport_pc_epp_write broken?"

    On Tue, Aug 13, 2002 at 07:44:29PM +0200, stef wrote:

    > Well, from the strace, it appears that reading the parport
    > only brings back 1024 bytes out of the 1696 asked. Since the code
    > does not check the return code, things go wrong. But it is a new
    > behaviour which is not exhibited by 2.4.18, which allways returned
    > all the data.

    Nonetheless, ppdev is within its rights to do this. The reason is
    that it uses a buffer that is only 1k big---this needs to be
    enlarged. Care to suggest a reasonable size?

    (You'll still need to do read() in a loop.)

    > The SANE backend does not catch any signal, nor does the
    > little test program that use it. So I'm a bit puzzled.

    Me too. I don't see any other reasons that ERESTARTSYS would appear.


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