[sane-devel] LT 9452 works only after replugging

Henning Meier-Geinitz henning@meier-geinitz.de
Sat, 5 Oct 2002 18:48:42 +0200


Hi,

On Sat, Oct 05, 2002 at 05:31:17PM +0100, Major A wrote:
> How does the firmware download work on these scanners anyway, is it
> done by SANE or the kernel module?

SANE. The backend checks if the firmware is already loaded and if it
isn't, uploads it with memory write commands. After that the firmware
is booted.

The patched kernel scanner driver is only necessary because the gt6801
chip doesn't support a bulk-in endpoint. The normal scanner driver
insists on having one, however. So these devices are not detected
without a patch.

Bye,
  Henning