From cfadc3ffccd5b75b4cd6babbfcd2271d37a82e90 Mon Sep 17 00:00:00 2001 From: Emmanuel Grumbach Date: Wed, 12 Feb 2014 08:51:54 +0200 Subject: [PATCH] iwlwifi: pcie: stop the firmware when we restart it In case the firmware didn't assert but we want to restart it, e.g. we didn't get the reply for a host command, or the Tx queues are stuck, we should stop the firmware by provoking an interrupt. This allows to better debug the firmware in these bad scenarios. Signed-off-by: Emmanuel Grumbach --- drivers/net/wireless/iwlwifi/pcie/tx.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/iwlwifi/pcie/tx.c b/drivers/net/wireless/iwlwifi/pcie/tx.c index e476d9eda61a..3b0c72c10054 100644 --- a/drivers/net/wireless/iwlwifi/pcie/tx.c +++ b/drivers/net/wireless/iwlwifi/pcie/tx.c @@ -207,7 +207,7 @@ static void iwl_pcie_txq_stuck_timer(unsigned long data) IWL_ERR(trans, "scratch %d = 0x%08x\n", i, le32_to_cpu(txq->scratchbufs[i].scratch)); - iwl_trans_fw_error(trans); + iwl_write_prph(trans, DEVICE_SET_NMI_REG, 1); } /* @@ -1024,7 +1024,7 @@ static void iwl_pcie_cmdq_reclaim(struct iwl_trans *trans, int txq_id, int idx) if (nfreed++ > 0) { IWL_ERR(trans, "HCMD skipped: index (%d) %d %d\n", idx, q->write_ptr, q->read_ptr); - iwl_trans_fw_error(trans); + iwl_write_prph(trans, DEVICE_SET_NMI_REG, 1); } } @@ -1583,6 +1583,7 @@ static int iwl_pcie_send_hcmd_sync(struct iwl_trans *trans, get_cmd_string(trans_pcie, cmd->id)); ret = -ETIMEDOUT; + iwl_write_prph(trans, DEVICE_SET_NMI_REG, 1); iwl_trans_fw_error(trans); goto cancel; -- 2.30.2