diff mbox series

[09/16] wifi: iwlwifi: fw: avoid bad FW config on RXQ DMA failure

Message ID 20240512072733.faf3a1b87589.I77c950173cb914676fbd28483e5ef420bb9f1bc9@changeid
State New
Headers show
Series wifi: iwlwifi: updates - 2024-05-12 | expand

Commit Message

Korenblit, Miriam Rachel May 12, 2024, 4:31 a.m. UTC 
From: Johannes Berg <johannes.berg@intel.com>

In practice, iwl_trans_get_rxq_dma_data() will not fail,
it only can do that if called with the wrong arguments.
But it does have an error value and doesn't initialize
the argument when it fails, so don't use the value then.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
---
 drivers/net/wireless/intel/iwlwifi/fw/init.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/wireless/intel/iwlwifi/fw/init.c b/drivers/net/wireless/intel/iwlwifi/fw/init.c
index 135bd48bfe9f..d8b083be5b6b 100644
--- a/drivers/net/wireless/intel/iwlwifi/fw/init.c
+++ b/drivers/net/wireless/intel/iwlwifi/fw/init.c
@@ -1,7 +1,7 @@ 
 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
 /*
  * Copyright (C) 2017 Intel Deutschland GmbH
- * Copyright (C) 2019-2021 Intel Corporation
+ * Copyright (C) 2019-2021, 2024 Intel Corporation
  */
 #include "iwl-drv.h"
 #include "runtime.h"
@@ -135,7 +135,9 @@  int iwl_configure_rxq(struct iwl_fw_runtime *fwrt)
 		struct iwl_trans_rxq_dma_data data;
 
 		cmd->data[i].q_num = i + 1;
-		iwl_trans_get_rxq_dma_data(fwrt->trans, i + 1, &data);
+		ret = iwl_trans_get_rxq_dma_data(fwrt->trans, i + 1, &data);
+		if (ret)
+			goto out;
 
 		cmd->data[i].fr_bd_cb = cpu_to_le64(data.fr_bd_cb);
 		cmd->data[i].urbd_stts_wrptr =
@@ -149,6 +151,7 @@  int iwl_configure_rxq(struct iwl_fw_runtime *fwrt)
 
 	ret = iwl_trans_send_cmd(fwrt->trans, &hcmd);
 
+out:
 	kfree(cmd);
 
 	if (ret)