Hi list,
the aha152x driver is currently ignoring REQUEST SENSE commands. This
seems to break it's operation with some scanners (e.g.
CANON IX-03035B).
That behaviour was recently introduced with the support for the new eh
code and was taken from the aha1542 driver. The driver now automatically
requests sense information on a check condition and returns it with the
command that caused the check condition.
Therefore an extra REQUEST SENSE seems useless. OTOH not ignoring
these commands seems to fix the problem.
But I'm not sure, if a device is required to keep the sense
information after it has been requested. I understand that it has to
keep the information until it is retrieved _or_ a new i/o process is
opened. So it might be lost after the first request.
SANE should use the sense information returned with the original command
instead of requesting it again, shouldn't it?
Does the same problem apply to the aha1542 driver?
J�rgen
--
J�rgen E Fischer
"I hear that if you play the NT 4.0 CD backwards, you get a satanic message".
"That's nothing. If you play it forward, it installs NT 4.0!"
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