via-pmu: don't bother with access_ok()

we are using copy_to_user() for actual copying

Signed-off-by: Al Viro <[email protected]>

Author: Al Viro

drivers/macintosh/via-pmu.c

@@ -2184,8 +2184,6 @@ pmu_read(struct file *file, char __user *buf,
 
 	if (count < 1 || !pp)
 		return -EINVAL;
-	if (!access_ok(buf, count))
-		return -EFAULT;
 
 	spin_lock_irqsave(&pp->lock, flags);
 	add_wait_queue(&pp->wait, &wait);