>i am using kernel 2.2.14-12
Then you need a different signature for your write method. Take a look at,
say, the lp driver. In particular, yours has too many arguments which is
probably why you are getting a garbage length turn up.
>> > copy_from_user(kbuf, buf, count);
>> This function returns an error flag; you ought to check for success. Also:
>i checked errno in the program that is using the driver, the code is
No, I meant you have to check the return value from copy_from_user itself.
>can you please point to some resource which explains how to use these
>parport functions and how to build drivers out of these?
Look in Documentation/parport-lowlevel.txt. Other than that your best bet is
probably to study the source code of existing drivers.
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This archive was generated by hypermail 2b29 : Wed Apr 11 2001 - 17:36:08 EDT