Re: mmap

From: Bernd Porr <bp1_at_cn.stir.ac.uk> · Date: Fri, 23 May 2003 20:51:10 +0100

David,

so it is option[COMEDI_DEVCONF_AUX_DATA] and 
option[COMEDI_DEVCONF_AUX_DATA_LENGTH]?

If so the driver daqboard2000.c should be modified? Cause I used it for 
my driver:

    if(copy_from_user(ptr,(void *)it->options[0],size)){
      result=-EFAULT;
      goto out;
    }

/Bernd 

David Schleef wrote:

>On Fri, May 23, 2003 at 01:35:15PM +0100, Bernd Porr wrote:
>  
>
>>Hi Anne,
>>
>>looks good. The function is not very well documented and that it is 
>>supplied as option[0] and option[1] prevents passing other parameters. 
>>    
>>
>
>Actually, it is COMEDI_DEVCONF_AUX_DATA and
>COMEDI_DEVCONF_AUX_DATA_LENGTH.
>
>  
>
>>There was a problem with the type of the option array. Maybe it's a 
>>good idea to pass the firmware with the help of a "real" pointer and
>>a size field. Just now there's only one driver in the comedi framwork 
>>which needs firmware (except the one I'm just writing) and therefore 
>>it might be the last moment to fix this. What does the community think 
>>about this?
>>    
>>
>
>It's only a problem with 64-bit machines, and can be worked around
>when the need arises.
>
>
>
>dave...
>
>
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>  
>

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