Scull Driver - Read

hi all, Going through scull driver code, i see read function reads only till end of 1 quantum, so do kernel call read multiple times if count from q_pos exceeds quantum size limit.? Ref: ldd3. if(count > quantum - q_pos) count = quantum - q_pos; if(copy_to_user(buf, dptr->data[s_pos] + q_pos,count)){ retval = -EFAULT; goto out; } *f_pos += count; retval = count; Thanks Regards