linux-kernel - [PATCH 53/57] staging: rtl8723bs: core: rtw_mlme_ext: Move very large data buffer onto the heap

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Message-Id: <20210414181129.1628598-54-lee.jones@linaro.org>
Date:   Wed, 14 Apr 2021 19:11:25 +0100
From:   Lee Jones <lee.jones@...aro.org>
To:     lee.jones@...aro.org
Cc:     linux-kernel@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-staging@...ts.linux.dev
Subject: [PATCH 53/57] staging: rtl8723bs: core: rtw_mlme_ext: Move very large data buffer onto the heap

Fixes the following W=1 kernel build warning(s):

 drivers/staging/rtl8723bs/core/rtw_mlme_ext.c: In function ‘issue_probersp’:
 drivers/staging/rtl8723bs/core/rtw_mlme_ext.c:2543:1: warning: the frame size of 1096 bytes is larger than 1024 bytes [-Wframe-larger-than=]

Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: linux-staging@...ts.linux.dev
Signed-off-by: Lee Jones <lee.jones@...aro.org>
---
 drivers/staging/rtl8723bs/core/rtw_mlme_ext.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/rtl8723bs/core/rtw_mlme_ext.c b/drivers/staging/rtl8723bs/core/rtw_mlme_ext.c
index f708e7b9f8fc8..78ca8fbaab8da 100644
--- a/drivers/staging/rtl8723bs/core/rtw_mlme_ext.c
+++ b/drivers/staging/rtl8723bs/core/rtw_mlme_ext.c
@@ -2450,9 +2450,13 @@ void issue_probersp(struct adapter *padapter, unsigned char *da, u8 is_valid_p2p
 			u8 *ssid_ie;
 			signed int ssid_ielen;
 			signed int ssid_ielen_diff;
-			u8 buf[MAX_IE_SZ];
+			u8 *buf;
 			u8 *ies = pmgntframe->buf_addr+TXDESC_OFFSET+sizeof(struct ieee80211_hdr_3addr);
 
+			buf = rtw_zmalloc(MAX_IE_SZ);
+			if (!buf)
+				return;
+
 			ssid_ie = rtw_get_ie(ies+_FIXED_IE_LENGTH_, WLAN_EID_SSID, &ssid_ielen,
 				(pframe-ies)-_FIXED_IE_LENGTH_);
 
@@ -2478,6 +2482,7 @@ void issue_probersp(struct adapter *padapter, unsigned char *da, u8 is_valid_p2p
 				pframe += ssid_ielen_diff;
 				pattrib->pktlen += ssid_ielen_diff;
 			}
+			kfree (buf);
 		}
 	} else {
 		/* timestamp will be inserted by hardware */
-- 
2.27.0