Hi, On Tue, Apr 23, 2002 at 10:29:13AM -0400, Srinivas Digumarty wrote: > I may just edit the sg driver and place a few printk statements to see > what the buffers hold on read and writes.
I did this some time ago to check what the mustek backend really sends to the scanner. It's not very clean but works for me: http://www.meier-geinitz.de/sane/tmp/sg.c or http://www.meier-geinitz.de/sane/tmp/sg.debug.dif for the diff). It's the version of Linux 2.4.17rc1 if I remember correctly but it should work with other versions, too. Copy it over drivers/scsi/sg.c and do make modules. The debug output is printed to syslog, the length of the buffers is limited to 20 by default. Search for max_length and change this value to get more. Some messages are printed to syslog unconditionally, others are diabled completely. Use the source if you want more :-) Bye, Henning
