[PATCH v5 1/2] wifi: ath11k: use union for vaddr and iaddr in target_mem_chunk

[Miaoqing Pan <quic_miaoqing@xxxxxxxxxxx>]

The value of 'ab->hw_params.fixed_mem_region' determines that
only one variable 'vaddr' or 'iaddr' is used in target_mem_chunk.
So use an anonymous union instead, easy to check whether the
memory is set or not.

Tested-on: WCN6855 hw2.1 PCI WLAN.HSP.1.1-04358-QCAHSPSWPL_V1_V2_SILICONZ_LITE-1

Signed-off-by: Miaoqing Pan <quic_miaoqing@xxxxxxxxxxx>
---
v5: use an anonymous union.
---
 drivers/net/wireless/ath/ath11k/qmi.c | 17 ++++++++++-------
 drivers/net/wireless/ath/ath11k/qmi.h |  9 ++++++---
 2 files changed, 16 insertions(+), 10 deletions(-)

diff --git a/drivers/net/wireless/ath/ath11k/qmi.c b/drivers/net/wireless/ath/ath11k/qmi.c
index 1bc648920ab6..dcfbc6d4f04f 100644
--- a/drivers/net/wireless/ath/ath11k/qmi.c
+++ b/drivers/net/wireless/ath/ath11k/qmi.c
@@ -1955,13 +1955,15 @@ static void ath11k_qmi_free_target_mem_chunk(struct ath11k_base *ab)
 	int i;
 
 	for (i = 0; i < ab->qmi.mem_seg_count; i++) {
-		if ((ab->hw_params.fixed_mem_region ||
-		     test_bit(ATH11K_FLAG_FIXED_MEM_RGN, &ab->dev_flags)) &&
-		     ab->qmi.target_mem[i].iaddr)
-			iounmap(ab->qmi.target_mem[i].iaddr);
+		if (!ab->qmi.target_mem[i].anyaddr)
+			continue;
 
-		if (!ab->qmi.target_mem[i].vaddr)
+		if (ab->hw_params.fixed_mem_region ||
+		    test_bit(ATH11K_FLAG_FIXED_MEM_RGN, &ab->dev_flags)) {
+			iounmap(ab->qmi.target_mem[i].iaddr);
+			ab->qmi.target_mem[i].iaddr = NULL;
 			continue;
+		}
 
 		dma_free_coherent(ab->dev,
 				  ab->qmi.target_mem[i].prev_size,
@@ -2068,7 +2070,7 @@ static int ath11k_qmi_assign_target_mem_chunk(struct ath11k_base *ab)
 			break;
 		case BDF_MEM_REGION_TYPE:
 			ab->qmi.target_mem[idx].paddr = ab->hw_params.bdf_addr;
-			ab->qmi.target_mem[idx].vaddr = NULL;
+			ab->qmi.target_mem[idx].iaddr = NULL;
 			ab->qmi.target_mem[idx].size = ab->qmi.target_mem[i].size;
 			ab->qmi.target_mem[idx].type = ab->qmi.target_mem[i].type;
 			idx++;
@@ -2091,10 +2093,11 @@ static int ath11k_qmi_assign_target_mem_chunk(struct ath11k_base *ab)
 				} else {
 					ab->qmi.target_mem[idx].paddr =
 						ATH11K_QMI_CALDB_ADDRESS;
+					ab->qmi.target_mem[idx].iaddr = NULL;
 				}
 			} else {
 				ab->qmi.target_mem[idx].paddr = 0;
-				ab->qmi.target_mem[idx].vaddr = NULL;
+				ab->qmi.target_mem[idx].iaddr = NULL;
 			}
 			ab->qmi.target_mem[idx].size = ab->qmi.target_mem[i].size;
 			ab->qmi.target_mem[idx].type = ab->qmi.target_mem[i].type;
diff --git a/drivers/net/wireless/ath/ath11k/qmi.h b/drivers/net/wireless/ath/ath11k/qmi.h
index 7e06d100af57..fdf9b5f8c19f 100644
--- a/drivers/net/wireless/ath/ath11k/qmi.h
+++ b/drivers/net/wireless/ath/ath11k/qmi.h
@@ -1,7 +1,7 @@
 /* SPDX-License-Identifier: BSD-3-Clause-Clear */
 /*
  * Copyright (c) 2018-2019 The Linux Foundation. All rights reserved.
- * Copyright (c) 2021-2023 Qualcomm Innovation Center, Inc. All rights reserved.
+ * Copyright (c) 2021-2024 Qualcomm Innovation Center, Inc. All rights reserved.
  */
 
 #ifndef ATH11K_QMI_H
@@ -102,8 +102,11 @@ struct target_mem_chunk {
 	u32 prev_size;
 	u32 prev_type;
 	dma_addr_t paddr;
-	u32 *vaddr;
-	void __iomem *iaddr;
+	union {
+		u32 *vaddr;
+		void __iomem *iaddr;
+		void *anyaddr;
+	};
 };
 
 struct target_info {
-- 
2.25.1