diff options
| author | Emmanuel Grumbach <emmanuel.grumbach@intel.com> | 2014-09-23 23:02:41 +0300 |
|---|---|---|
| committer | Emmanuel Grumbach <emmanuel.grumbach@intel.com> | 2014-10-23 21:21:47 +0300 |
| commit | 9180ac50716a097a407c6d7e7e4589754a922260 (patch) | |
| tree | 175305c65dceb1e32571d9aaf33d60303b985682 /drivers/net/wireless/iwlwifi/mvm/fw.c | |
| parent | 35a9ad8af0bb0fa3525e6d0d20e32551d226f38e (diff) | |
iwlwifi: configure the LTR
The LTR is the handshake between the device and the root
complex about the latency allowed when the bus exits power
save. This configuration was missing and this led to high
latency in the link power up. The end user could experience
high latency in the network because of this.
Cc: <stable@vger.kernel.org> [3.10+]
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Diffstat (limited to 'drivers/net/wireless/iwlwifi/mvm/fw.c')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/mvm/fw.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/net/wireless/iwlwifi/mvm/fw.c b/drivers/net/wireless/iwlwifi/mvm/fw.c index 23fd711a67e4..e0d9f19650b0 100644 --- a/drivers/net/wireless/iwlwifi/mvm/fw.c +++ b/drivers/net/wireless/iwlwifi/mvm/fw.c @@ -480,6 +480,15 @@ int iwl_mvm_up(struct iwl_mvm *mvm) /* Initialize tx backoffs to the minimal possible */ iwl_mvm_tt_tx_backoff(mvm, 0); + if (mvm->trans->ltr_enabled) { + struct iwl_ltr_config_cmd cmd = { + .flags = cpu_to_le32(LTR_CFG_FLAG_FEATURE_ENABLE), + }; + + WARN_ON(iwl_mvm_send_cmd_pdu(mvm, LTR_CONFIG, 0, + sizeof(cmd), &cmd)); + } + ret = iwl_mvm_power_update_device(mvm); if (ret) goto error; |