> static ssize_t Device_read(struct file *filp,char *buf,size_t
> count,loff_t *offset)
> {
> if (*offset >= sizeof(msg) )
> {
> return 0;
> }
>
> count = sizeof(msg);
>
> if(copy_to_user(buf, msg, count))
> return -EFAULT;
>
> *offset += count;
> return count;
> }
>
Well.. i had similar program some time back, which worked fine.
I guess the problem is with the --first call-- to the read function where you are assuming that the value will be >= message size. Try printing out there itself what is the value of "offset" is!
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