From 10cae1c8dfbbdee55bdfcb7034f4c2c1197dc0a4 Mon Sep 17 00:00:00 2001 From: Ralf Baechle Date: Thu, 24 Nov 2011 23:09:00 +0000 Subject: [PATCH] NET: NETROM: Cleanup argument SIOCADDRT ioctl argument checking. nr_route.ndigis is unsigned int so the nr_route.ndigis < 0 expression is never true and can be dropped. Doing the nr_ax25_dev_get call later allows the nr_route.ndigis test to bail out without having to dev_put. Signed-off-by: Ralf Baechle Cc: Thomas Osterried Signed-off-by: David S. Miller --- net/netrom/nr_route.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/net/netrom/nr_route.c b/net/netrom/nr_route.c index 8d7716ca5342..2cf330162d7e 100644 --- a/net/netrom/nr_route.c +++ b/net/netrom/nr_route.c @@ -670,12 +670,10 @@ int nr_rt_ioctl(unsigned int cmd, void __user *arg) case SIOCADDRT: if (copy_from_user(&nr_route, arg, sizeof(struct nr_route_struct))) return -EFAULT; - if ((dev = nr_ax25_dev_get(nr_route.device)) == NULL) + if (nr_route.ndigis > AX25_MAX_DIGIS) return -EINVAL; - if (nr_route.ndigis < 0 || nr_route.ndigis > AX25_MAX_DIGIS) { - dev_put(dev); + if ((dev = nr_ax25_dev_get(nr_route.device)) == NULL) return -EINVAL; - } switch (nr_route.type) { case NETROM_NODE: if (strnlen(nr_route.mnemonic, 7) == 7) { -- 2.20.1