[PATCH 4.4 065/162] iwlwifi: mvm: disable RX-diversity in powersave

Greg Kroah-Hartman
2021-11-24T12:04:27Z

From: Johannes Berg <johannes.berg@intel.com>

[ Upstream commit e5322b9ab5f63536c41301150b7ce64605ce52cc ]

Just like we have default SMPS mode as dynamic in powersave,
we should not enable RX-diversity in powersave, to reduce
power consumption when connected to a non-MIMO AP.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20211017113927.fc896bc5cdaa.I1d11da71b8a5cbe921a37058d5f578f1b14a2023@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/wireless/iwlwifi/mvm/utils.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/net/wireless/iwlwifi/mvm/utils.c b/drivers/net/wireless/iwlwifi/mvm/utils.c
index ad0f16909e2e2..3d089eb9dff51 100644
--- a/drivers/net/wireless/iwlwifi/mvm/utils.c
+++ b/drivers/net/wireless/iwlwifi/mvm/utils.c
@@ -923,6 +923,9 @@ bool iwl_mvm_rx_diversity_allowed(struct iwl_mvm *mvm)

lockdep_assert_held(&mvm->mutex);

+ if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
+ return false;
+
if (num_of_ant(iwl_mvm_get_valid_rx_ant(mvm)) == 1)
return false;

--
2.33.0