From: Emmanuel Grumbach Date: Sun, 12 Oct 2014 10:23:40 +0000 (+0300) Subject: iwlwifi: pcie: fix recovery from ARC reset in WoWLAN X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=a3ead6568c511d47b6cdc3d624ef0b4924e9dd27;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git iwlwifi: pcie: fix recovery from ARC reset in WoWLAN 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 Signed-off-by: Emmanuel Grumbach --- diff --git a/drivers/net/wireless/iwlwifi/pcie/trans.c b/drivers/net/wireless/iwlwifi/pcie/trans.c index 5c9064fdbfda..aea0fe9d1779 100644 --- a/drivers/net/wireless/iwlwifi/pcie/trans.c +++ b/drivers/net/wireless/iwlwifi/pcie/trans.c @@ -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; }