Commit 1aa02b5a authored by Avri Altman's avatar Avri Altman Committed by Emmanuel Grumbach

iwlwifi: pcie: don't disable the busmaster DMA clock for family 8000

Disabling the clocks is a standard procedure while stopping the
device. On family 8000 however, disabling the bus master DMA clock
increases the NIC's power consumption.

To fix this, skip this call if the device family is
IWL_DEVICE_FAMILY_8000.
Signed-off-by: default avatarAvri Altman <avri.altman@intel.com>
Reviewed-by: default avatarJohannes Berg <johannes.berg@intel.com>
Signed-off-by: default avatarEmmanuel Grumbach <emmanuel.grumbach@intel.com>
parent ed659187
......@@ -1049,10 +1049,12 @@ static void iwl_trans_pcie_stop_device(struct iwl_trans *trans, bool low_power)
iwl_pcie_rx_stop(trans);
/* Power-down device's busmaster DMA clocks */
if (trans->cfg->device_family != IWL_DEVICE_FAMILY_8000) {
iwl_write_prph(trans, APMG_CLK_DIS_REG,
APMG_CLK_VAL_DMA_CLK_RQT);
udelay(5);
}
}
/* Make sure (redundant) we've released our request to stay awake */
iwl_clear_bit(trans, CSR_GP_CNTRL,
......
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