On Thu, 2018-11-29 at 11:25 +0100, Greg KH wrote: > On Thu, Nov 29, 2018 at 10:43:52AM +0200, Luca Coelho wrote: > > From: Emmanuel Grumbach <emmanuel.grumbach@xxxxxxxxx> > > > > When the firmware starts, it doesn't have any regulatory > > information, hence it uses the world wide limitations. The > > driver can feed the firmware with previous knowledge that > > was kept in the driver, but the firmware may still not > > update its internal tables. > > > > This happens when we start a BSS interface, and then the > > firmware can change the regulatory tables based on our > > location and it'll use more lenient, location specific > > rules. Then, if the firmware is shut down (when the > > interface is brought down), and then an AP interface is > > created, the firmware will forget the country specific > > rules. > > > > The host will think that we are in a certain country that > > may allow channels and will try to teach the firmware about > > our location, but the firmware may still not allow to drop > > the world wide limitations and apply country specific rules > > because it was just re-started. > > > > In this case, the firmware will reply with MCC_RESP_ILLEGAL > > to the MCC_UPDATE_CMD. In that case, iwlwifi needs to let > > the upper layers (cfg80211 / hostapd) know that the channel > > list they know about has been updated. > > > > This fixes https://bugzilla.kernel.org/show_bug.cgi?id=201105 > > > > Cc: stable@xxxxxxxxxxxxxxx > > Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@xxxxxxxxx> > > Signed-off-by: Luca Coelho <luciano.coelho@xxxxxxxxx> > > --- > > drivers/net/wireless/iwlwifi/mvm/mac80211.c | 8 ++++++-- > > drivers/net/wireless/iwlwifi/mvm/nvm.c | 5 ++--- > > 2 files changed, 8 insertions(+), 5 deletions(-) > > You forgot the git commit id :( Ouch! Sorry about that... > I dug it up and queued this up now. Thanks, Greg! -- Cheers, Luca.
