From 89fdb468e201c16b31d3337b68993bc9f763a5a0 Mon Sep 17 00:00:00 2001
From: Franky Lin <frankyl@broadcom.com>
Date: Thu, 9 Feb 2012 21:09:01 +0100
Subject: [PATCH] brcm80211: fmac: make sure cancel_work_sync only called after
 INIT_WORK

INIT_WORK only gets called after brcmf_proto_attach returns
success. This dependency should be annotated in brcmf_detach to
avoid any error.

Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: Franky Lin <frankyl@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---
 drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c b/drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c
index db2df1f1e6b27..eff0073879c71 100644
--- a/drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c
+++ b/drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c
@@ -1109,13 +1109,13 @@ void brcmf_detach(struct device *dev)
 		if (drvr->iflist[i])
 			brcmf_del_if(drvr, i);
 
-	cancel_work_sync(&drvr->setmacaddr_work);
-	cancel_work_sync(&drvr->multicast_work);
-
 	brcmf_bus_detach(drvr);
 
-	if (drvr->prot)
+	if (drvr->prot) {
+		cancel_work_sync(&drvr->setmacaddr_work);
+		cancel_work_sync(&drvr->multicast_work);
 		brcmf_proto_detach(drvr);
+	}
 
 	bus_if->drvr = NULL;
 	kfree(drvr);
-- 
2.30.2