mlxsw: spectrum_router: Correctly remove nexthop groups

[karo-tx-linux.git] / drivers / net / tun.c

diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index a569e61bc1d9e6647b8b60ef700efdef52b58de5..57e88b8147002237fd34ec39ebeb33093e6503e0 100644 (file)
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -1156,7 +1156,6 @@ static ssize_t tun_get_user(struct tun_struct *tun, struct tun_file *tfile,
        bool zerocopy = false;
        int err;
        u32 rxhash;
-       ssize_t n;
 
        if (!(tun->dev->flags & IFF_UP))
                return -EIO;
@@ -1166,8 +1165,7 @@ static ssize_t tun_get_user(struct tun_struct *tun, struct tun_file *tfile,
                        return -EINVAL;
                len -= sizeof(pi);
 
-               n = copy_from_iter(&pi, sizeof(pi), from);
-               if (n != sizeof(pi))
+               if (!copy_from_iter_full(&pi, sizeof(pi), from))
                        return -EFAULT;
        }
 
@@ -1176,8 +1174,7 @@ static ssize_t tun_get_user(struct tun_struct *tun, struct tun_file *tfile,
                        return -EINVAL;
                len -= tun->vnet_hdr_sz;
 
-               n = copy_from_iter(&gso, sizeof(gso), from);
-               if (n != sizeof(gso))
+               if (!copy_from_iter_full(&gso, sizeof(gso), from))
                        return -EFAULT;
 
                if ((gso.flags & VIRTIO_NET_HDR_F_NEEDS_CSUM) &&