linux-kernel - [PATCH 1/9] staging: r8188eu: rtw_free_xmitframe

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Message-Id: <20230130195303.138941-2-martin@kaiser.cx>
Date:   Mon, 30 Jan 2023 20:52:55 +0100
From:   Martin Kaiser <martin@...ser.cx>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Larry Finger <Larry.Finger@...inger.net>,
        Phillip Potter <phil@...lpotter.co.uk>,
        Michael Straube <straube.linux@...il.com>,
        Pavel Skripkin <paskripkin@...il.com>,
        linux-staging@...ts.linux.dev, linux-kernel@...r.kernel.org,
        Martin Kaiser <martin@...ser.cx>
Subject: [PATCH 1/9] staging: r8188eu: rtw_free_xmitframe_queue needs no spinlock

There's no need for a spinlock in rtw_free_xmitframe_queue.

This function is called only from rtw_free_stainfo. rtw_free_stainfo holds
pxmitpriv->lock during all rtw_free_xmitframe_queue calls.

Signed-off-by: Martin Kaiser <martin@...ser.cx>
---
 drivers/staging/r8188eu/core/rtw_xmit.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/drivers/staging/r8188eu/core/rtw_xmit.c b/drivers/staging/r8188eu/core/rtw_xmit.c
index f50e10f0d51f..4e49f1d49eb5 100644
--- a/drivers/staging/r8188eu/core/rtw_xmit.c
+++ b/drivers/staging/r8188eu/core/rtw_xmit.c
@@ -1330,8 +1330,6 @@ void rtw_free_xmitframe_queue(struct xmit_priv *pxmitpriv, struct __queue *pfram
 	struct list_head *plist, *phead;
 	struct	xmit_frame	*pxmitframe;
 
-	spin_lock_bh(&pframequeue->lock);
-
 	phead = get_list_head(pframequeue);
 	plist = phead->next;
 
@@ -1342,7 +1340,6 @@ void rtw_free_xmitframe_queue(struct xmit_priv *pxmitpriv, struct __queue *pfram
 
 		rtw_free_xmitframe(pxmitpriv, pxmitframe);
 	}
-	spin_unlock_bh(&pframequeue->lock);
 }
 
 struct xmit_frame *rtw_dequeue_xframe(struct xmit_priv *pxmitpriv, struct hw_xmit *phwxmit_i)
-- 
2.30.2