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isdn: get rid of pointless access_ok()

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copy_to_user()/copy_from_user()/get_user() check themselves

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2017-06-03 21:44:11 -04:00
parent ae2a9762d6
commit 31acd2665b
3 changed files with 0 additions and 26 deletions
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6
drivers/isdn/i4l/isdn_ppp.c
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@@ -795,9 +795,6 @@ isdn_ppp_read(int min, struct file *file, char __user *buf, int count)
if (!(is->state & IPPP_OPEN))
return 0;
if (!access_ok(VERIFY_WRITE, buf, count))
return -EFAULT;
spin_lock_irqsave(&is->buflock, flags);
b = is->first->next;
save_buf = b->buf;
@@ -2014,9 +2011,6 @@ isdn_ppp_dev_ioctl_stats(int slot, struct ifreq *ifr, struct net_device *dev)
struct ppp_stats t;
isdn_net_local *lp = netdev_priv(dev);
if (!access_ok(VERIFY_WRITE, res, sizeof(struct ppp_stats)))
return -EFAULT;
/* build a temporary stat struct and copy it to user space */
memset(&t, 0, sizeof(struct ppp_stats));