diff mbox series

[ath-next,4/4] wifi: ath12k: Use skb->len for dma_unmap_single() length parameter

Message ID 20250402181454.2699777-5-praneesh.p@oss.qualcomm.com (mailing list archive)
State New
Delegated to: Jeff Johnson
Headers show
Series wifi: ath12k: Fix multicast memory leak in tx path | expand

Checks

Context Check Description
wifibot/fixes_present success Fixes tag not required for -next series
wifibot/series_format success Posting correctly formatted
wifibot/tree_selection success Clearly marked for ath-next
wifibot/ynl success Generated files up to date; no warnings/errors; no diff in generated;
wifibot/build_32bit success Errors and warnings before: 0 this patch: 0
wifibot/build_allmodconfig_warn success Errors and warnings before: 0 this patch: 0
wifibot/build_clang success Errors and warnings before: 0 this patch: 0
wifibot/build_clang_rust success No Rust files in patch. Skipping build
wifibot/build_tools success No tools touched, skip
wifibot/check_selftest success No net selftest shell script
wifibot/checkpatch success total: 0 errors, 0 warnings, 0 checks, 32 lines checked
wifibot/deprecated_api success None detected
wifibot/header_inline success No static functions without inline keyword in header files
wifibot/kdoc success Errors and warnings before: 0 this patch: 0
wifibot/source_inline success Was 0 now: 0
wifibot/verify_fixes success No Fixes tag
wifibot/verify_signedoff success Signed-off-by tag matches author and committer

Commit Message

P Praneesh April 2, 2025, 6:14 p.m. UTC 
During dma_unmap_single() for extended skb, the driver currently uses
sizeof() of the corresponding structure. When the allocation size changes,
one of the parameters of dma_unmap_single() needs to be updated everywhere.
Improve code readability by using skb->len instead of sizeof() the structure.

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.4.1-00199-QCAHKSWPL_SILICONZ-1
Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3

Signed-off-by: P Praneesh <praneesh.p@oss.qualcomm.com>
---
 drivers/net/wireless/ath/ath12k/dp_tx.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/wireless/ath/ath12k/dp_tx.c b/drivers/net/wireless/ath/ath12k/dp_tx.c
index ab359483472f..9e598a585020 100644
--- a/drivers/net/wireless/ath/ath12k/dp_tx.c
+++ b/drivers/net/wireless/ath/ath12k/dp_tx.c
@@ -481,7 +481,7 @@  int ath12k_dp_tx(struct ath12k *ar, struct ath12k_link_vif *arvif,
 fail_unmap_dma_ext:
 	if (skb_cb->paddr_ext_desc)
 		dma_unmap_single(ab->dev, skb_cb->paddr_ext_desc,
-				 sizeof(struct hal_tx_msdu_ext_desc),
+				 skb_ext_desc->len,
 				 DMA_TO_DEVICE);
 fail_free_ext_skb:
 	kfree_skb(skb_ext_desc);
@@ -512,7 +512,7 @@  static void ath12k_dp_tx_free_txbuf(struct ath12k_base *ab,
 	dma_unmap_single(ab->dev, skb_cb->paddr, msdu->len, DMA_TO_DEVICE);
 	if (skb_cb->paddr_ext_desc) {
 		dma_unmap_single(ab->dev, skb_cb->paddr_ext_desc,
-				 sizeof(struct hal_tx_msdu_ext_desc), DMA_TO_DEVICE);
+				 desc_params->skb_ext_desc->len, DMA_TO_DEVICE);
 		dev_kfree_skb_any(desc_params->skb_ext_desc);
 	}
 
@@ -544,7 +544,7 @@  ath12k_dp_tx_htt_tx_complete_buf(struct ath12k_base *ab,
 	dma_unmap_single(ab->dev, skb_cb->paddr, msdu->len, DMA_TO_DEVICE);
 	if (skb_cb->paddr_ext_desc) {
 		dma_unmap_single(ab->dev, skb_cb->paddr_ext_desc,
-				 sizeof(struct hal_tx_msdu_ext_desc), DMA_TO_DEVICE);
+				 desc_params->skb_ext_desc->len, DMA_TO_DEVICE);
 		dev_kfree_skb_any(desc_params->skb_ext_desc);
 	}
 
@@ -744,7 +744,7 @@  static void ath12k_dp_tx_complete_msdu(struct ath12k *ar,
 	dma_unmap_single(ab->dev, skb_cb->paddr, msdu->len, DMA_TO_DEVICE);
 	if (skb_cb->paddr_ext_desc) {
 		dma_unmap_single(ab->dev, skb_cb->paddr_ext_desc,
-				 sizeof(struct hal_tx_msdu_ext_desc), DMA_TO_DEVICE);
+				 desc_params->skb_ext_desc->len, DMA_TO_DEVICE);
 		dev_kfree_skb_any(desc_params->skb_ext_desc);
 	}