You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
99 lines
2.9 KiB
99 lines
2.9 KiB
From: Arend van Spriel <arend@broadcom.com>
|
|
Date: Wed, 26 Aug 2015 22:15:04 +0200
|
|
Subject: [PATCH] brcmfmac: introduce brcmf_net_detach() function
|
|
|
|
In case of error during brcmf_bus_start() the network interfaces were
|
|
freed using free_netdev(). However, the interfaces may have additional
|
|
memory allocated which is not freed. The netdev has destructor set to
|
|
brcmf_cfg80211_free_netdev() which frees the additional memory if
|
|
allocated and call free_netdev(). The brcmf_net_detach() either calls
|
|
brcmf_cfg80211_free_netdev() directly or uses unregister_netdev() when
|
|
struct net_device::reg_state indicates the netdev was registered.
|
|
|
|
Reported-by: Daniel (Deognyoun) Kim <dekim@broadcom.com>
|
|
Reviewed-by: Hante Meuleman <meuleman@broadcom.com>
|
|
Reviewed-by: Franky (Zhenhui) Lin <frankyl@broadcom.com>
|
|
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
|
|
Signed-off-by: Arend van Spriel <arend@broadcom.com>
|
|
---
|
|
|
|
--- a/drivers/net/wireless/brcm80211/brcmfmac/cfg80211.c
|
|
+++ b/drivers/net/wireless/brcm80211/brcmfmac/cfg80211.c
|
|
@@ -4747,7 +4747,8 @@ void brcmf_cfg80211_free_netdev(struct n
|
|
ifp = netdev_priv(ndev);
|
|
vif = ifp->vif;
|
|
|
|
- brcmf_free_vif(vif);
|
|
+ if (vif)
|
|
+ brcmf_free_vif(vif);
|
|
free_netdev(ndev);
|
|
}
|
|
|
|
--- a/drivers/net/wireless/brcm80211/brcmfmac/core.c
|
|
+++ b/drivers/net/wireless/brcm80211/brcmfmac/core.c
|
|
@@ -718,8 +718,6 @@ int brcmf_net_attach(struct brcmf_if *if
|
|
}
|
|
|
|
brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name);
|
|
-
|
|
- ndev->destructor = brcmf_cfg80211_free_netdev;
|
|
return 0;
|
|
|
|
fail:
|
|
@@ -729,6 +727,14 @@ fail:
|
|
return -EBADE;
|
|
}
|
|
|
|
+static void brcmf_net_detach(struct net_device *ndev)
|
|
+{
|
|
+ if (ndev->reg_state == NETREG_REGISTERED)
|
|
+ unregister_netdev(ndev);
|
|
+ else
|
|
+ brcmf_cfg80211_free_netdev(ndev);
|
|
+}
|
|
+
|
|
static int brcmf_net_p2p_open(struct net_device *ndev)
|
|
{
|
|
brcmf_dbg(TRACE, "Enter\n");
|
|
@@ -805,8 +811,7 @@ struct brcmf_if *brcmf_add_if(struct brc
|
|
ifp->ndev->name);
|
|
if (ifidx) {
|
|
netif_stop_queue(ifp->ndev);
|
|
- unregister_netdev(ifp->ndev);
|
|
- free_netdev(ifp->ndev);
|
|
+ brcmf_net_detach(ifp->ndev);
|
|
drvr->iflist[bssidx] = NULL;
|
|
} else {
|
|
brcmf_err("ignore IF event\n");
|
|
@@ -828,6 +833,7 @@ struct brcmf_if *brcmf_add_if(struct brc
|
|
if (!ndev)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
+ ndev->destructor = brcmf_cfg80211_free_netdev;
|
|
ifp = netdev_priv(ndev);
|
|
ifp->ndev = ndev;
|
|
/* store mapping ifidx to bssidx */
|
|
@@ -879,8 +885,7 @@ static void brcmf_del_if(struct brcmf_pu
|
|
cancel_work_sync(&ifp->setmacaddr_work);
|
|
cancel_work_sync(&ifp->multicast_work);
|
|
}
|
|
- /* unregister will take care of freeing it */
|
|
- unregister_netdev(ifp->ndev);
|
|
+ brcmf_net_detach(ifp->ndev);
|
|
}
|
|
}
|
|
|
|
@@ -1056,11 +1061,11 @@ fail:
|
|
brcmf_fws_deinit(drvr);
|
|
}
|
|
if (drvr->iflist[0]) {
|
|
- free_netdev(ifp->ndev);
|
|
+ brcmf_net_detach(ifp->ndev);
|
|
drvr->iflist[0] = NULL;
|
|
}
|
|
if (p2p_ifp) {
|
|
- free_netdev(p2p_ifp->ndev);
|
|
+ brcmf_net_detach(p2p_ifp->ndev);
|
|
drvr->iflist[1] = NULL;
|
|
}
|
|
return ret;
|
|
|