From ba3d4acd96b9353d006eb1e2846fcfe92ea6d97c Mon Sep 17 00:00:00 2001
From: Johannes Berg <johannes.berg@intel.com>
Date: Thu, 10 Feb 2022 18:22:24 +0200
Subject: [PATCH] iwlwifi: make iwl_txq_dyn_alloc_dma() return the txq
Git-commit: ba3d4acd96b9353d006eb1e2846fcfe92ea6d97c
Patch-mainline: v5.18-rc1
References: bsc#1202131
Use the ERR_PTR() machinery to return the queue or an
error, instead of having a separate out parameter.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20220210181930.1f0c5d72fb89.Iefca56d535558b7a8d23204fd16129c17b6704b6@changeid
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/net/wireless/intel/iwlwifi/queue/tx.c | 26 +++++++++----------
1 file changed, 12 insertions(+), 14 deletions(-)
diff --git a/drivers/net/wireless/intel/iwlwifi/queue/tx.c b/drivers/net/wireless/intel/iwlwifi/queue/tx.c
index f80bea04e31b..49625c679a5a 100644
--- a/drivers/net/wireless/intel/iwlwifi/queue/tx.c
+++ b/drivers/net/wireless/intel/iwlwifi/queue/tx.c
@@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
/*
- * Copyright (C) 2020-2021 Intel Corporation
+ * Copyright (C) 2020-2022 Intel Corporation
*/
#include <net/tso.h>
#include <linux/tcp.h>
@@ -1083,9 +1083,8 @@ int iwl_txq_alloc(struct iwl_trans *trans, struct iwl_txq *txq, int slots_num,
return -ENOMEM;
}
-static int iwl_txq_dyn_alloc_dma(struct iwl_trans *trans,
- struct iwl_txq **intxq, int size,
- unsigned int timeout)
+static struct iwl_txq *
+iwl_txq_dyn_alloc_dma(struct iwl_trans *trans, int size, unsigned int timeout)
{
size_t bc_tbl_size, bc_tbl_entries;
struct iwl_txq *txq;
@@ -1097,18 +1096,18 @@ static int iwl_txq_dyn_alloc_dma(struct iwl_trans *trans,
bc_tbl_entries = bc_tbl_size / sizeof(u16);
if (WARN_ON(size > bc_tbl_entries))
- return -EINVAL;
+ return ERR_PTR(-EINVAL);
txq = kzalloc(sizeof(*txq), GFP_KERNEL);
if (!txq)
- return -ENOMEM;
+ return ERR_PTR(-ENOMEM);
txq->bc_tbl.addr = dma_pool_alloc(trans->txqs.bc_pool, GFP_KERNEL,
&txq->bc_tbl.dma);
if (!txq->bc_tbl.addr) {
IWL_ERR(trans, "Scheduler BC Table allocation failed\n");
kfree(txq);
- return -ENOMEM;
+ return ERR_PTR(-ENOMEM);
}
ret = iwl_txq_alloc(trans, txq, size, false);
@@ -1124,12 +1123,11 @@ static int iwl_txq_dyn_alloc_dma(struct iwl_trans *trans,
txq->wd_timeout = msecs_to_jiffies(timeout);
- *intxq = txq;
- return 0;
+ return txq;
error:
iwl_txq_gen2_free_memory(trans, txq);
- return ret;
+ return ERR_PTR(ret);
}
static int iwl_txq_alloc_response(struct iwl_trans *trans, struct iwl_txq *txq,
@@ -1189,7 +1187,7 @@ static int iwl_txq_alloc_response(struct iwl_trans *trans, struct iwl_txq *txq,
int iwl_txq_dyn_alloc(struct iwl_trans *trans, __le16 flags, u8 sta_id, u8 tid,
int cmd_id, int size, unsigned int timeout)
{
- struct iwl_txq *txq = NULL;
+ struct iwl_txq *txq;
struct iwl_tx_queue_cfg_cmd cmd = {
.flags = flags,
.sta_id = sta_id,
@@ -1203,9 +1201,9 @@ int iwl_txq_dyn_alloc(struct iwl_trans *trans, __le16 flags, u8 sta_id, u8 tid,
};
int ret;
- ret = iwl_txq_dyn_alloc_dma(trans, &txq, size, timeout);
- if (ret)
- return ret;
+ txq = iwl_txq_dyn_alloc_dma(trans, size, timeout);
+ if (IS_ERR(txq))
+ return PTR_ERR(txq);
cmd.tfdq_addr = cpu_to_le64(txq->dma_addr);
cmd.byte_cnt_addr = cpu_to_le64(txq->bc_tbl.dma);
--
2.35.3