backport: fix netdev destructor backport

The commit that changed the netdev destructor was also applied in
v4.12-rc6, so we need to update the backport.

Another issue was that when the default free_netdev() destructor was supposed to be used, we would get compilation errors, such as this one in hwsim:

In file included from ./include/net/dst.h:12:0,
                 from /home/luca/iwlwifi/stack-dev/drivers/net/wireless/mac80211_hwsim.c:22:
/home/luca/iwlwifi/stack-dev/drivers/net/wireless/mac80211_hwsim.c: In function hwsim_mon_setup':
/home/luca/iwlwifi/stack-dev/backport-include/linux/netdevice.h:325:23: error: '__free_netdev' undeclared (first use in this function)
  (_dev)->destructor = __ ## _destructor
                       ^
/home/luca/iwlwifi/stack-dev/drivers/net/wireless/mac80211_hwsim.c:2977:2: note: in expansion of macro 'netdev_set_priv_destructor'
  netdev_set_priv_destructor(dev, free_netdev);
  ^~~~~~~~~~~~~~~~~~~~~~~~~~
/home/luca/iwlwifi/stack-dev/backport-include/linux/netdevice.h:325:23: note: each undeclared identifier is reported only once for each function it appears in
  (_dev)->destructor = __ ## _destructor
                       ^
/home/luca/iwlwifi/stack-dev/drivers/net/wireless/mac80211_hwsim.c:2977:2: note: in expansion of macro 'netdev_set_priv_destructor'
  netdev_set_priv_destructor(dev, free_netdev);
  ^~~~~~~~~~~~~~~~~~~~~~~~~~
scripts/Makefile.build:300: recipe for target '/home/luca/iwlwifi/stack-dev/drivers/net/wireless/mac80211_hwsim.o' failed

To fix this, add a new macro, netdev_set_def_destructor(), that
handles this special case.

Change-Id: Ifcf1f19690487aee67e776b5700ff496c779e86c
Fixes: 721ae78f9355 ("backport: handle change in netdevice destructor usage")
Reviewed-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>

0 files changed, 0 insertions, 0 deletions