netpoll: Fix device name check in netpoll_setup()
authorMatthias Kaehlcke <mka@chromium.org>
Tue, 25 Jul 2017 18:36:25 +0000 (11:36 -0700)
committerDavid S. Miller <davem@davemloft.net>
Thu, 27 Jul 2017 00:01:43 +0000 (17:01 -0700)
commit0c3a8f8b8fabff4f3ad2dd7b95ae0e90cdd1aebb
treed5977d97a9fed104cabe1c35086b3ad6c6afb125
parentd94708a553022bf012fa95af10532a134eeb5a52
netpoll: Fix device name check in netpoll_setup()

Apparently netpoll_setup() assumes that netpoll.dev_name is a pointer
when checking if the device name is set:

if (np->dev_name) {
  ...

However the field is a character array, therefore the condition always
yields true. Check instead whether the first byte of the array has a
non-zero value.

Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/core/netpoll.c