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[12/14] wifi: iwlwifi: pcie: clear FW debug memory on init

Message ID 20230613155501.73c32255a132.Ibd7101dcd285b01ee879fddfbf52c30d49ced3c0@changeid (mailing list archive)
State Accepted
Delegated to: Johannes Berg
Headers show
Series wifi: iwlwifi: updates intended for v6.5 2023-06-13 | expand

Commit Message

Greenman, Gregory June 13, 2023, 12:57 p.m. UTC 
From: Johannes Berg <johannes.berg@intel.com>

When we restart the firmware, we shouldn't keep old debug data
around. Since the "allocate" function might not reallocate the
memory block (it's only freed when we unbind from the device),
clear the memory to have a clean slate for debug data.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
---
 drivers/net/wireless/intel/iwlwifi/pcie/trans.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/trans.c b/drivers/net/wireless/intel/iwlwifi/pcie/trans.c
index 7240beca6419..84e832fdfa83 100644
--- a/drivers/net/wireless/intel/iwlwifi/pcie/trans.c
+++ b/drivers/net/wireless/intel/iwlwifi/pcie/trans.c
@@ -1,6 +1,6 @@ 
 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
 /*
- * Copyright (C) 2007-2015, 2018-2022 Intel Corporation
+ * Copyright (C) 2007-2015, 2018-2023 Intel Corporation
  * Copyright (C) 2013-2015 Intel Mobile Communications GmbH
  * Copyright (C) 2016-2017 Intel Deutschland GmbH
  */
@@ -171,8 +171,10 @@  static void iwl_pcie_alloc_fw_monitor_block(struct iwl_trans *trans,
 	u32 size = 0;
 	u8 power;
 
-	if (fw_mon->size)
+	if (fw_mon->size) {
+		memset(fw_mon->block, 0, fw_mon->size);
 		return;
+	}
 
 	for (power = max_power; power >= min_power; power--) {
 		size = BIT(power);
@@ -215,9 +217,6 @@  void iwl_pcie_alloc_fw_monitor(struct iwl_trans *trans, u8 max_power)
 		 max_power))
 		return;
 
-	if (trans->dbg.fw_mon.size)
-		return;
-
 	iwl_pcie_alloc_fw_monitor_block(trans, max_power, 11);
 }