arp: fixed -Wuninitialized compiler warning
authorIhar Hrachyshka <ihrachys@redhat.com>
Wed, 24 May 2017 22:19:35 +0000 (15:19 -0700)
committerDavid S. Miller <davem@davemloft.net>
Thu, 25 May 2017 17:38:20 +0000 (13:38 -0400)
commit5990baaa6d7b437dfcf58b7021ca56b1d6b35869
tree28108a28ba1863c260df7228e2a5f51c0f981113
parentba615f675281d76fd19aa03558777f81fb6b6084
arp: fixed -Wuninitialized compiler warning

Commit 7d472a59c0e5ec117220a05de6b370447fb6cb66 ("arp: always override
existing neigh entries with gratuitous ARP") introduced a compiler
warning:

net/ipv4/arp.c:880:35: warning: 'addr_type' may be used uninitialized in
this function [-Wmaybe-uninitialized]

While the code logic seems to be correct and doesn't allow the variable
to be used uninitialized, and the warning is not consistently
reproducible, it's still worth fixing it for other people not to waste
time looking at the warning in case it pops up in the build environment.
Yes, compiler is probably at fault, but we will need to accommodate.

Fixes: 7d472a59c0e5 ("arp: always override existing neigh entries with gratuitous ARP")
Signed-off-by: Ihar Hrachyshka <ihrachys@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/ipv4/arp.c