tree 710a8ef03b2814d4c02be804ff273cf18e7e802a
parent 07e5a5f5ab7474589c15fc5d88e4f7fc43979530
author Johannes Berg <johannes.berg@intel.com> 1363721217 +0100
committer Johannes Berg <johannes.berg@intel.com> 1363814491 +0100

cfg80211: fix wdev tracing crash

Arend reported a crash in tracing if the driver returns an
ERR_PTR() value from the add_virtual_intf() callback. This
is due to the tracing then still attempting to dereference
the "pointer", fix this by using IS_ERR_OR_NULL().

Reported-by: Arend van Spriel <arend@broadcom.com>
Tested-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>