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iwlwifi: pcie: fix recovery from ARC reset in WoWLAN

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When the ARC is reset when we exit from Sx in case we had
WoWLAN running, we can't access the prph before we reset
the NIC.

Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
This commit is contained in:
Emmanuel Grumbach 2014-10-12 13:23:40 +03:00
parent 40a76905ad
commit a3ead6568c
1 changed files with 8 additions and 9 deletions
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17
drivers/net/wireless/iwlwifi/pcie/trans.c
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@ -1023,14 +1023,6 @@ static int iwl_trans_pcie_d3_resume(struct iwl_trans *trans,
return 0;
}
iwl_pcie_set_pwr(trans, false);
val = iwl_read32(trans, CSR_RESET);
if (val & CSR_RESET_REG_FLAG_NEVO_RESET) {
*status = IWL_D3_STATUS_RESET;
return 0;
}
/*
* Also enables interrupts - none will happen as the device doesn't
* know we're waking it up, only when the opmode actually tells it
@ -1050,6 +1042,8 @@ static int iwl_trans_pcie_d3_resume(struct iwl_trans *trans,
return ret;
}
iwl_pcie_set_pwr(trans, false);
iwl_trans_pcie_tx_reset(trans);
ret = iwl_pcie_rx_init(trans);
@ -1058,7 +1052,12 @@ static int iwl_trans_pcie_d3_resume(struct iwl_trans *trans,
return ret;
}
*status = IWL_D3_STATUS_ALIVE;
val = iwl_read32(trans, CSR_RESET);
if (val & CSR_RESET_REG_FLAG_NEVO_RESET)
*status = IWL_D3_STATUS_RESET;
else
*status = IWL_D3_STATUS_ALIVE;
return 0;
}