[PATCH 0/2][SRU][B/D/E/OEM-B/OEM-OSP1-B] iwlwifi: exclude GEO SAR support for 3168

[You-Sheng Yang]

BugLink: https://bugs.launchpad.net/bugs/1846016

[Impact]
Intel Wireless AC-3168 and some 8000 models give iwlwifi firmware error
messages in dmesg:

  kernel: iwlwifi 0000:02:00.0: Loaded firmware version: 36.77d01142.0
  kernel: iwlwifi 0000:02:00.0: FW error in SYNC CMD GEO_TX_POWER_LIMIT

This affect B/D/E/OEM-B/OEM-OSP1-B that with GEO_TX_POWER_LIMIT support.

[Fix]
Two upstream patches to be SRU-ed:

  fddbfeece9c7 "iwlwifi: fw: don't send GEO_TX_POWER_LIMIT command to FW version 36"
  12e36d98d3e5 "iwlwifi: exclude GEO SAR support for 3168"

They basically exclude unsupported firmware version for sending
GEO_TX_POWER_LIMIT command.

[Test Case]
Tested on a Ubuntu certified HP EliteDesk 800 G3 DM that has the same AC 3168
wireless adapter.

[Regression Risk]
Low. This doesn't affect the majority of iwlwifi support devices but
those incapable of processing GEO_TX_POWER_LIMIT command in the
firmware.

Luca Coelho (2):
  iwlwifi: fw: don't send GEO_TX_POWER_LIMIT command to FW version 36
  iwlwifi: exclude GEO SAR support for 3168

 drivers/net/wireless/intel/iwlwifi/mvm/fw.c | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

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2.20.1