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| author | Emmanuel Grumbach <emmanuel.grumbach@intel.com> | 2014-04-13 11:49:16 +0400 |
|---|---|---|
| committer | Emmanuel Grumbach <emmanuel.grumbach@intel.com> | 2014-04-13 23:23:20 +0400 |
| commit | e03bbb62cfdf539ae8110b297493c685f9d12774 (patch) | |
| tree | a1ab199b2b6381d13fcc66b7f891c0cac9a79230 /drivers/net/wireless/iwlwifi/pcie | |
| parent | c6e37a686e02f5859000c0a01428e375d5e59d65 (diff) | |
| download | linux-e03bbb62cfdf539ae8110b297493c685f9d12774.tar.xz | |
iwlwifi: don't disable SCD chain extension on newer devices
7000 device series have a fix for this hardware feature.
Stop disabling it, and get an improvement in Tx throughput.
This feature allows the scheduler to fetch more frames on
the fly while an A-MPDU is being built - which means that
we can get larger A-MPDU. This, of course, give an
improvement in the Tx throughput.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Diffstat (limited to 'drivers/net/wireless/iwlwifi/pcie')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/pcie/tx.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/net/wireless/iwlwifi/pcie/tx.c b/drivers/net/wireless/iwlwifi/pcie/tx.c index 78a6ff215c04..dde6031f4257 100644 --- a/drivers/net/wireless/iwlwifi/pcie/tx.c +++ b/drivers/net/wireless/iwlwifi/pcie/tx.c @@ -696,7 +696,8 @@ void iwl_pcie_tx_start(struct iwl_trans *trans, u32 scd_base_addr) /* The chain extension of the SCD doesn't work well. This feature is * enabled by default by the HW, so we need to disable it manually. */ - iwl_write_prph(trans, SCD_CHAINEXT_EN, 0); + if (trans->cfg->base_params->scd_chain_ext_wa) + iwl_write_prph(trans, SCD_CHAINEXT_EN, 0); iwl_trans_ac_txq_enable(trans, trans_pcie->cmd_queue, trans_pcie->cmd_fifo); |