From: Malcolm Priestley <tvboxspy@gmail.com>
Date: Thu, 15 May 2014 21:49:17 +0000 (+0100)
Subject: staging: vt6656: lock changes: bMgrPrepareBeaconToSend add lock.
X-Git-Tag: firefly_0821_release~176^2~3465^2~39^2~870
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=8783a1a4afa4e14cf134afc7838b23fcd745b996;p=firefly-linux-kernel-4.4.55.git

staging: vt6656: lock changes: bMgrPrepareBeaconToSend add lock.

bMgrPrepareBeaconToSend is nolonger atomic

csBeacon_xmit must be locked add spin lock.

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/staging/vt6656/wmgr.c b/drivers/staging/vt6656/wmgr.c
index 0d69719a7426..cce67cdad26a 100644
--- a/drivers/staging/vt6656/wmgr.c
+++ b/drivers/staging/vt6656/wmgr.c
@@ -4058,6 +4058,7 @@ int bMgrPrepareBeaconToSend(struct vnt_private *pDevice,
 	struct vnt_manager *pMgmt)
 {
 	struct vnt_tx_mgmt *pTxPacket;
+	unsigned long flags;
 
 //    pDevice->bBeaconBufReady = false;
     if (pDevice->bEncryptionEnable || pDevice->bEnable8021x){
@@ -4084,8 +4085,13 @@ int bMgrPrepareBeaconToSend(struct vnt_private *pDevice,
         (pMgmt->abyCurrBSSID[0] == 0))
         return false;
 
-    csBeacon_xmit(pDevice, pTxPacket);
-    MACvRegBitsOn(pDevice, MAC_REG_TCR, TCR_AUTOBCNTX);
+	spin_lock_irqsave(&pDevice->lock, flags);
+
+	csBeacon_xmit(pDevice, pTxPacket);
+
+	spin_unlock_irqrestore(&pDevice->lock, flags);
+
+	MACvRegBitsOn(pDevice, MAC_REG_TCR, TCR_AUTOBCNTX);
 
     return true;
 }