diff mbox series

wifi: ath11k: fix the stack frame size warning in ath11k_vif_wow_set_wakeups

Message ID 20240829075253.657667-1-quic_miaoqing@quicinc.com
State New
Headers show
Series wifi: ath11k: fix the stack frame size warning in ath11k_vif_wow_set_wakeups | expand

Commit Message

Miaoqing Pan Aug. 29, 2024, 7:52 a.m. UTC
Fix the following W=1 kernel build warning:

drivers/net/wireless/ath/ath11k/wow.c: In function ‘ath11k_vif_wow_set_wakeups’:
drivers/net/wireless/ath/ath11k/wow.c:461:1: warning: the frame size of 1352 bytes is larger than 1024 bytes [-Wframe-larger-than=]

Remove the nonessential variable 'struct cfg80211_pkt_pattern
old_pattern' by relocating bitmask to bytemask conversion into
ath11k_wow_convert_8023_to_80211().

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

Signed-off-by: Miaoqing Pan <quic_miaoqing@quicinc.com>
---
 drivers/net/wireless/ath/ath11k/wow.c | 39 ++++++++++++++-------------
 1 file changed, 21 insertions(+), 18 deletions(-)

Comments

Jeff Johnson Sept. 5, 2024, 7:09 p.m. UTC | #1
On 8/29/2024 12:52 AM, Miaoqing Pan wrote:
> Fix the following W=1 kernel build warning:
> 
> drivers/net/wireless/ath/ath11k/wow.c: In function ‘ath11k_vif_wow_set_wakeups’:
> drivers/net/wireless/ath/ath11k/wow.c:461:1: warning: the frame size of 1352 bytes is larger than 1024 bytes [-Wframe-larger-than=]
> 
> Remove the nonessential variable 'struct cfg80211_pkt_pattern
> old_pattern' by relocating bitmask to bytemask conversion into
> ath11k_wow_convert_8023_to_80211().
> 
> Tested-on: WCN6855 hw2.1 PCI WLAN.HSP.1.1-04358-QCAHSPSWPL_V1_V2_SILICONZ_LITE-1
> 
> Signed-off-by: Miaoqing Pan <quic_miaoqing@quicinc.com>
Acked-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Kalle Valo Sept. 28, 2024, 9:16 a.m. UTC | #2
Miaoqing Pan <quic_miaoqing@quicinc.com> wrote:

> Fix the following W=1 kernel build warning:
> 
> drivers/net/wireless/ath/ath11k/wow.c: In function ‘ath11k_vif_wow_set_wakeups’:
> drivers/net/wireless/ath/ath11k/wow.c:461:1: warning: the frame size of 1352 bytes is larger than 1024 bytes [-Wframe-larger-than=]
> 
> Remove the nonessential variable 'struct cfg80211_pkt_pattern
> old_pattern' by relocating bitmask to bytemask conversion into
> ath11k_wow_convert_8023_to_80211().
> 
> Tested-on: WCN6855 hw2.1 PCI WLAN.HSP.1.1-04358-QCAHSPSWPL_V1_V2_SILICONZ_LITE-1
> 
> Signed-off-by: Miaoqing Pan <quic_miaoqing@quicinc.com>
> Acked-by: Jeff Johnson <quic_jjohnson@quicinc.com>
> Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>

Patch applied to ath-next branch of ath.git, thanks.

6f15937833d8 wifi: ath11k: fix the stack frame size warning in ath11k_vif_wow_set_wakeups
diff mbox series

Patch

diff --git a/drivers/net/wireless/ath/ath11k/wow.c b/drivers/net/wireless/ath/ath11k/wow.c
index 99d8ba45a75b..827085a926b2 100644
--- a/drivers/net/wireless/ath/ath11k/wow.c
+++ b/drivers/net/wireless/ath/ath11k/wow.c
@@ -1,7 +1,7 @@ 
 // SPDX-License-Identifier: BSD-3-Clause-Clear
 /*
  * Copyright (c) 2020 The Linux Foundation. All rights reserved.
- * Copyright (c) 2022-2023 Qualcomm Innovation Center, Inc. All rights reserved.
+ * Copyright (c) 2022-2024 Qualcomm Innovation Center, Inc. All rights reserved.
  */
 
 #include <linux/delay.h>
@@ -155,6 +155,7 @@  static void ath11k_wow_convert_8023_to_80211(struct cfg80211_pkt_pattern *new,
 	u8 hdr_8023_bit_mask[ETH_HLEN] = {};
 	u8 hdr_80211_pattern[WOW_HDR_LEN] = {};
 	u8 hdr_80211_bit_mask[WOW_HDR_LEN] = {};
+	u8 bytemask[WOW_MAX_PATTERN_SIZE] = {};
 
 	int total_len = old->pkt_offset + old->pattern_len;
 	int hdr_80211_end_offset;
@@ -172,11 +173,17 @@  static void ath11k_wow_convert_8023_to_80211(struct cfg80211_pkt_pattern *new,
 	struct rfc1042_hdr *new_rfc_mask =
 		(struct rfc1042_hdr *)(hdr_80211_bit_mask + hdr_len);
 	int rfc_len = sizeof(*new_rfc_pattern);
+	int i;
+
+	/* convert bitmask to bytemask */
+	for (i = 0; i < old->pattern_len; i++)
+		if (old->mask[i / 8] & BIT(i % 8))
+			bytemask[i] = 0xff;
 
 	memcpy(hdr_8023_pattern + old->pkt_offset,
 	       old->pattern, ETH_HLEN - old->pkt_offset);
 	memcpy(hdr_8023_bit_mask + old->pkt_offset,
-	       old->mask, ETH_HLEN - old->pkt_offset);
+	       bytemask, ETH_HLEN - old->pkt_offset);
 
 	/* Copy destination address */
 	memcpy(new_hdr_pattern->addr1, old_hdr_pattern->h_dest, ETH_ALEN);
@@ -232,7 +239,7 @@  static void ath11k_wow_convert_8023_to_80211(struct cfg80211_pkt_pattern *new,
 		       (void *)old->pattern + ETH_HLEN - old->pkt_offset,
 		       total_len - ETH_HLEN);
 		memcpy((u8 *)new->mask + new->pattern_len,
-		       (void *)old->mask + ETH_HLEN - old->pkt_offset,
+		       bytemask + ETH_HLEN - old->pkt_offset,
 		       total_len - ETH_HLEN);
 
 		new->pattern_len += total_len - ETH_HLEN;
@@ -393,35 +400,31 @@  static int ath11k_vif_wow_set_wakeups(struct ath11k_vif *arvif,
 	}
 
 	for (i = 0; i < wowlan->n_patterns; i++) {
-		u8 bitmask[WOW_MAX_PATTERN_SIZE] = {};
 		u8 ath_pattern[WOW_MAX_PATTERN_SIZE] = {};
 		u8 ath_bitmask[WOW_MAX_PATTERN_SIZE] = {};
 		struct cfg80211_pkt_pattern new_pattern = {};
-		struct cfg80211_pkt_pattern old_pattern = patterns[i];
-		int j;
 
 		new_pattern.pattern = ath_pattern;
 		new_pattern.mask = ath_bitmask;
 		if (patterns[i].pattern_len > WOW_MAX_PATTERN_SIZE)
 			continue;
-		/* convert bytemask to bitmask */
-		for (j = 0; j < patterns[i].pattern_len; j++)
-			if (patterns[i].mask[j / 8] & BIT(j % 8))
-				bitmask[j] = 0xff;
-		old_pattern.mask = bitmask;
 
 		if (ar->wmi->wmi_ab->wlan_resource_config.rx_decap_mode ==
 		    ATH11K_HW_TXRX_NATIVE_WIFI) {
 			if (patterns[i].pkt_offset < ETH_HLEN) {
-				u8 pattern_ext[WOW_MAX_PATTERN_SIZE] = {};
-
-				memcpy(pattern_ext, old_pattern.pattern,
-				       old_pattern.pattern_len);
-				old_pattern.pattern = pattern_ext;
 				ath11k_wow_convert_8023_to_80211(&new_pattern,
-								 &old_pattern);
+								 &patterns[i]);
 			} else {
-				new_pattern = old_pattern;
+				int j;
+
+				new_pattern = patterns[i];
+				new_pattern.mask = ath_bitmask;
+
+				/* convert bitmask to bytemask */
+				for (j = 0; j < patterns[i].pattern_len; j++)
+					if (patterns[i].mask[j / 8] & BIT(j % 8))
+						ath_bitmask[j] = 0xff;
+
 				new_pattern.pkt_offset += WOW_HDR_LEN - ETH_HLEN;
 			}
 		}