--static int dslmod_sysctl (ctl_table * ctl, int write, struct file *filp,
-+static int dslmod_sysctl (struct ctl_table * ctl, int write, struct file *filp,
- void *buffer, size_t * lenp);
+-static int dslmod_sysctl (ctl_table * ctl, int write, void *buffer,
++static int dslmod_sysctl (struct ctl_table * ctl, int write, void *buffer,
+ size_t * lenp, loff_t *ppos);