iwlwifi: pcie: don't call set_pwr functions for family 8000

We should not call the iwl_pcie_set_pwr() functions in the
suspend/resume flows for family 8000, because the register used is
locked in devices from this family.  Doing this causes an NMI
protection error (RT_NMI_INTERRUPT_PREG_PROTECTION).

To fix this, skip those calls if the device family is
IWL_DEVICE_FAMILY_8000.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>

diff --git a/drivers/net/wireless/iwlwifi/pcie/trans.c b/drivers/net/wireless/iwlwifi/pcie/trans.c
index 8e5be8d..d894338 100644 (file)
--- a/drivers/net/wireless/iwlwifi/pcie/trans.c
+++ b/drivers/net/wireless/iwlwifi/pcie/trans.c
@@ -1164,7 +1164,8 @@ static void iwl_trans_pcie_d3_suspend(struct iwl_trans *trans, bool test)
         */
        iwl_trans_pcie_tx_reset(trans);
 
-       iwl_pcie_set_pwr(trans, true);
+       if (trans->cfg->device_family != IWL_DEVICE_FAMILY_8000)
+               iwl_pcie_set_pwr(trans, true);
 }
 
 static int iwl_trans_pcie_d3_resume(struct iwl_trans *trans,
@@ -1202,7 +1203,8 @@ static int iwl_trans_pcie_d3_resume(struct iwl_trans *trans,
                return ret;
        }
 
-       iwl_pcie_set_pwr(trans, false);
+       if (trans->cfg->device_family != IWL_DEVICE_FAMILY_8000)
+               iwl_pcie_set_pwr(trans, false);
 
        iwl_trans_pcie_tx_reset(trans);