ulpt problem (USB_ERR_IOERROR)
patfbsd at davenulle.org
Thu Jul 16 22:50:07 UTC 2009
Le Thu, 16 Jul 2009 22:22:10 +0200,
Hans Petter Selasky <hselasky at c2i.net> a écrit :
> Could you try to add an "if (sc->sc_fflags == 0)" in front, like this:
> * Only read status while the device is not opened, due to
> * possible hardware or firmware bug in some printers.
> if (sc->sc_fflags == 0)
It works fine with this check. Cool!
But why, that is not clear. FreeBSD 7.2 checks the status of the
printer only when the device is opened and before each write.
> > Not related but I noticed that usb_write() in usb_dev.c returns -1
> > if I hit Ctrl-C when doing a "cat file > /dev/unlpt0". Because
> > usb_fifo_wait(f) returns -1 (should be EINTR?).
> If cv_wait_sig() returns -1, then they do not behave like in the
> manual page:
Yes I saw, I will try to dig more into the code.
(will open a new thread for this)
Thank you very much, regards.
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